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gyroflow.py
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gyroflow.py
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"""Main file containing UI code"""
import sys
import random
import cv2
import os
import numpy as np
from PySide2 import QtCore, QtWidgets, QtGui
from matplotlib import colors
from _version import __version__
from vidgear.gears.helper import get_valid_ffmpeg_path
import calibrate_video
import time
import nonlinear_stretch
import urllib.request
import json
import re
import subprocess
import bundled_images
import insta360_utility as insta360_util
import stabilizer
import smoothing_algos
from datetime import datetime
import gyrolog
from UI_elements import sync_ui
# area for environment variables
try:
os.environ.pop("QT_QPA_PLATFORM_PLUGIN_PATH")
os.environ.pop("QT_QPA_FONTDIR")
except:
pass
# https://en.wikipedia.org/wiki/List_of_digital_camera_brands
cam_company_list = ["GoPro", "Runcam", "Insta360", "Caddx", "Foxeer", "DJI", "RED", "Canon", "Arri",
"Blackmagic", "Casio", "Nikon", "Panasonic", "Sony", "Jvc", "Olympus", "Fujifilm",
"Phone"]
class Launcher(QtWidgets.QWidget):
"""Main launcher with options to open different utilities
"""
def __init__(self):
super().__init__()
self.setWindowTitle("Gyroflow {} Launcher".format(__version__))
self.setWindowIcon(QtGui.QIcon(':/media/icon.png'))
self.setFixedWidth(450)
# image
pixmap = QtGui.QPixmap(':/media/logo_rev0_w400.png')
self.top_logo = QtWidgets.QLabel()
self.top_logo.setPixmap(pixmap.scaled(400,450,QtCore.Qt.KeepAspectRatio))
self.top_logo.setAlignment(QtCore.Qt.AlignCenter)
self.text = QtWidgets.QLabel("<h2>Version {}</h2>".format(__version__))
self.text.setAlignment(QtCore.Qt.AlignCenter)
self.calibrator_button = QtWidgets.QPushButton("Camera Calibrator")
self.calibrator_button.setMinimumSize(300,50)
self.calibrator_button.setStyleSheet("font-size: 14px;")
self.calibrator_button.setToolTip("Use this to generate camera calibration files")
self.stabilizer_button = QtWidgets.QPushButton("Video Stabilizer (Fancy version)")
self.stabilizer_button.setMinimumSize(300,50)
self.stabilizer_button.setEnabled(True)
self.stabilizer_button.setStyleSheet("font-size: 14px;")
self.stabilizer_barebone_button = QtWidgets.QPushButton("Video Stabilizer (old)")
self.stabilizer_barebone_button.setMinimumSize(300,30)
self.stabilizer_barebone_button.setStyleSheet("font-size: 13px;")
self.stretch_button = QtWidgets.QPushButton("Non-linear Stretch")
self.stretch_button.setMinimumSize(300,30)
self.stretch_button.setStyleSheet("font-size: 13px;")
self.version_button = QtWidgets.QPushButton("Check for updates")
self.version_button.setMinimumSize(300,30)
self.version_button.setStyleSheet("font-size: 13px;")
self.footer = QtWidgets.QLabel('''Developed by Elvin & Contributors | <a href='http://gyroflow.xyz/'>gyroflow.xyz</a> | <a href='https://github.com/ElvinC/gyroflow'>Git repo</a> | <a href='http://gyroflow.xyz/donate'>Donate</p>''')
self.footer.setOpenExternalLinks(True)
self.footer.setAlignment(QtCore.Qt.AlignCenter)
self.layout = QtWidgets.QVBoxLayout()
self.layout.addWidget(self.top_logo)
self.layout.addWidget(self.text)
self.layout.addWidget(self.stabilizer_button)
self.layout.addWidget(self.calibrator_button)
line = QtWidgets.QFrame()
line.setFrameShape(QtWidgets.QFrame.HLine)
line.setFrameShadow(QtWidgets.QFrame.Sunken)
line.setMinimumHeight(20)
self.layout.addWidget(line)
self.layout.addWidget(self.stabilizer_barebone_button)
self.layout.addWidget(self.stretch_button)
self.layout.addWidget(self.version_button)
self.layout.addWidget(self.footer)
self.setLayout(self.layout)
self.calibrator_button.clicked.connect(self.open_calib_util)
self.stabilizer_button.clicked.connect(self.open_stab_util)
self.stabilizer_barebone_button.clicked.connect(self.open_stab_util_barebone)
self.stretch_button.clicked.connect(self.open_stretch_util)
self.version_button.clicked.connect(self.check_version)
# Placeholder for utility windows.
self.calibrator_utility = None
self.stabilizer_utility = None
self.stabilizer_utility_barebone = None
self.stretch_utility = None
self.check_version(True)
def open_calib_util(self):
"""Open the camera calibration utility in a new window
"""
# Only open if not already open
if self.calibrator_utility:
if self.calibrator_utility.isVisible():
return
self.calibrator_utility = CalibratorUtility()
self.calibrator_utility.resize(500, 500)
self.calibrator_utility.show()
def open_stab_util(self):
"""Open video stabilization utility in new window
"""
# Only open if not already open
if self.stabilizer_utility:
if self.stabilizer_utility.isVisible():
return
self.stab_utility = StabUtility()
self.stab_utility.resize(500, 500)
self.stab_utility.show()
def open_stab_util_barebone(self):
if self.stabilizer_utility_barebone:
if self.stabilizer_utility_barebone.isVisible():
return
self.stabilizer_utility_barebone = StabUtilityBarebone()
self.stabilizer_utility_barebone.resize(500, 800)
self.stabilizer_utility_barebone.show()
def open_stretch_util(self):
"""Open non-linear stretch utility in new window
"""
# Only open if not already open
if self.stretch_utility:
if self.stretch_utility.isVisible():
return
self.stretch_utility = StretchUtility()
self.stretch_utility.resize(500, 500)
self.stretch_utility.show()
def check_version(self, background=False):
try:
with urllib.request.urlopen("https://api.github.com/repos/elvinc/gyroflow/releases") as url:
releases = json.loads(url.read())
newest_version = releases[0]["tag_name"]
new = re.match("(\d+).(\d+).(\d+).*", newest_version).groups()
current = re.match("(\d+).(\d+).(\d+).*", __version__).groups()
extra = ""
diff = [int(A) - int(B) for A,B in zip(new,current)]
val = diff[0] if diff[0] != 0 else diff[1] if diff[1] != 0 else diff[2] if diff[2] != 0 else 0
showpopup = not background
if newest_version.strip() == __version__.strip():
extra = "Not much to see here:"
elif val > 0:
extra = "Oh look, there's a shiny new update. <a href='https://elvinchen.com/gyroflow/download/'>Here's a link just for you.</a> "
showpopup = True
elif val < 0:
extra = "Looks like somebody is time traveling..."
else:
extra = "Spot the difference:"
if showpopup:
msg_window = QtWidgets.QMessageBox(self)
msg_window.setIcon(QtWidgets.QMessageBox.Information)
msg_window.setText("{}<br>Your version: <b>{}</b>, newest release: <b>{}</b>".format(extra, __version__, newest_version))
msg_window.setWindowTitle("Version check")
msg_window.show()
except:
print("Unable to check version")
class VideoThread(QtCore.QThread):
changePixmap = QtCore.Signal(QtGui.QImage)
def __init__(self, parent, frame_pos_update = None):
"""Video Thread
Args:
parent ([type]):
frame_pos_update (function, optional): Function to call for frame num update. Defaults to None.
"""
super().__init__(parent)
self.playing = False
self.update_once = False
self.next_frame = False
self.frame_pos_update = frame_pos_update
self.map1s = []
self.map2s = []
self.frame_delay = 1/30
self.map_function = None
self.map_function_enable = True
self.map_preview_res = (1280, 720)
# Draw vertical lines at given coords
self.vert_line_coords = []
self.cap = None
self.frame = None
# used for scaling
self.max_width = 1280
self.stretch_enable = False
self.horizontal_stretch = 1
def run(self):
"""
Run the videoplayer using the thread
"""
self.cap = cv2.VideoCapture()
while True:
if self.playing or self.next_frame:
self.next_frame = False
self.this_frame_num = int(self.cap.get(cv2.CAP_PROP_POS_FRAMES))
ret, self.frame = self.cap.read()
if ret:
time.sleep(self.frame_delay)
self.update_frame()
elif self.update_once:
self.update_once = False
self.update_frame()
else:
time.sleep(1/20)
def update_frame(self):
"""Opdate the current video frame shown
"""
if self.frame is None:
return
# https://stackoverflow.com/a/55468544/6622587
rgbImage = cv2.cvtColor(self.frame, cv2.COLOR_BGR2RGB)
for i in range(len(self.map1s)):
# apply the maps using linear interpolation for now
rgbImage = cv2.remap(rgbImage, self.map1s[i], self.map2s[i], cv2.INTER_LINEAR)
for line_pos in self.vert_line_coords:
cv2.line(rgbImage,(int(line_pos), 0),(int(line_pos),rgbImage.shape[0]),(255,255,0),2)
# Resize to match pixel aspect
if self.map_function and self.map_function_enable:
tmap1, tmap2 = self.map_function(self.this_frame_num, out_size = self.map_preview_res)
rgbImage = cv2.remap(rgbImage, tmap1, tmap2, cv2.INTER_LINEAR)
if rgbImage.shape[1] > self.max_width:
new_height = self.max_width/rgbImage.shape[1] * rgbImage.shape[0]
if self.stretch_enable:
new_height = new_height / self.horizontal_stretch
rgbImage = cv2.resize(rgbImage, (self.max_width, round(new_height)))
elif self.stretch_enable:
new_height = round(rgbImage.shape[0] / self.horizontal_stretch)
rgbImage = cv2.resize(rgbImage, (rgbImage.shape[1], new_height))
h, w, ch = rgbImage.shape
bytesPerLine = ch * w
convertToQtFormat = QtGui.QImage(rgbImage.data, w, h, bytesPerLine, QtGui.QImage.Format_RGB888)
self.changePixmap.emit(convertToQtFormat.copy())
if self.this_frame_num % 5 == 0 and self.frame_pos_update:
self.frame_pos_update(self.this_frame_num)
# based on https://robonobodojo.wordpress.com/2018/07/01/automatic-image-sizing-with-pyside/
# and https://stackoverflow.com/questions/44404349/pyqt-showing-video-stream-from-opencv/44404713
class VideoPlayer(QtWidgets.QLabel):
def __init__(self, img = "placeholder.jpg"):
super(VideoPlayer, self).__init__()
self.setFrameStyle(QtWidgets.QFrame.StyledPanel)
self.pixmap = QtGui.QPixmap(img)
#self.setPixmap(self.pixmap)
self.setMinimumSize(1,1)
self.setSizePolicy(QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Expanding)
def paintEvent(self, event = None):
size = self.size()
painter = QtGui.QPainter(self)
point = QtCore.QPoint(0,0)
if not self.pixmap.isNull():
scaledPix = self.pixmap.scaled(size, QtCore.Qt.KeepAspectRatio, transformMode = QtCore.Qt.SmoothTransformation)
point.setX((size.width() - scaledPix.width())/2)
point.setY((size.height() - scaledPix.height())/2)
# print point.x(), ' ', point.y()
painter.drawPixmap(point, scaledPix)
class VideoPlayerWidget(QtWidgets.QWidget):
def __init__(self):
"""Widget containing videoplayer and controls
"""
QtWidgets.QWidget.__init__(self)
self.player = VideoPlayer("placeholder.jpg")
self.layout = QtWidgets.QVBoxLayout()
self.layout.addWidget(self.player)
#self.setStyleSheet("background-color:rgb(100, 100, 100);")
self.setLayout(self.layout)
self.control_bar = QtWidgets.QWidget()
self.control_layout = QtWidgets.QHBoxLayout()
self.control_bar.setLayout(self.control_layout)
self.play_button = QtWidgets.QPushButton("Play")
self.play_button.clicked.connect(self.toggle_play)
# seek bar with value from 0-200
self.time_slider = QtWidgets.QSlider(QtCore.Qt.Horizontal, self)
self.time_slider.setMinimum(0)
self.time_slider.setValue(0)
self.seek_ticks = 200
self.time_slider.setMaximum(self.seek_ticks)
self.time_slider.setSingleStep(1)
self.time_slider.setTickInterval(1)
#self.time_slider.valueChanged.connect(self.seek)
self.time_slider.sliderPressed.connect(self.start_seek)
self.time_slider.sliderReleased.connect(self.stop_seek)
self.is_seeking = False
self.was_playing_before = False
self.last_seek_time = time.time()
self.time_stamp_display = QtWidgets.QLabel("0 s (--:-- / --:--)")
self.time_stamp_display.setStyleSheet("font-size:12px;")
self.control_layout.addWidget(self.play_button)
self.control_layout.addWidget(self.time_slider)
self.control_layout.addWidget(self.time_stamp_display)
self.layout.addWidget(self.control_bar)
self.frame_width = 1920 # placeholder
self.frame_height = 1080
self.num_frames = 0
self.fps = 30
self.video_length = 0
# initialize thread for video player with frame update function
self.thread = VideoThread(self, self.set_seek_frame)
self.thread.changePixmap.connect(self.setImage)
self.thread.start()
@QtCore.Slot(QtGui.QImage)
def setImage(self, image):
pixmap = QtGui.QPixmap.fromImage(image)
self.player.pixmap = pixmap
self.player.setPixmap(pixmap)
def set_cv_frame(self, frame):
self.thread.frame = frame
self.thread.update_once = True
def stop(self):
self.thread.playing = False
self.play_button.setText("Play")
def play(self):
self.thread.playing = True
self.play_button.setText("Pause")
def toggle_play(self):
#self.video_viewer.thread.cap.set(cv2.CAP_PROP_POS_MSEC, 2)
self.thread.playing = not self.thread.playing
self.play_button.setText("Pause" if self.thread.playing else "Play")
def set_video_path(self, path):
self.stop()
self.thread.cap.release()
self.thread.cap = cv2.VideoCapture(path)
self.frame_width = self.thread.cap.get(cv2.CAP_PROP_FRAME_WIDTH)
self.frame_height = self.thread.cap.get(cv2.CAP_PROP_FRAME_HEIGHT)
self.num_frames = self.thread.cap.get(cv2.CAP_PROP_FRAME_COUNT)
self.fps = self.thread.cap.get(cv2.CAP_PROP_FPS)
self.video_length = int(self.num_frames / self.fps)
self.thread.frame_delay = max(1/self.fps, 0.005)
def reset_maps(self):
self.thread.map1s = []
self.thread.map2s = []
def add_maps(self, map1, map2):
self.thread.map1s.append(map1)
self.thread.map2s.append(map2)
def set_map_function(self, map_function):
self.thread.map_function = map_function
def reset_map_function(self):
self.thread.map_function = None
def enable_map_function(self, enabled = True):
self.thread.map_function_enable = enabled
def set_horizontal_stretch(self, stretch=1):
self.thread.horizontal_stretch = stretch
def enable_stretch(self, enabled = True):
self.thread.stretch_enable = enabled
def reset_lines(self):
self.thread.vert_line_coords = []
def add_vert_lines(self, xcoord):
self.thread.vert_line_coords.append(xcoord)
def update_frame(self):
self.thread.update_once = True
def next_frame(self):
self.thread.next_frame = True
def start_seek(self):
self.is_seeking = True
self.was_playing_before = self.thread.playing
self.stop()
def stop_seek(self):
self.is_seeking = False
self.seek()
def seek(self):
"""Handler for seek bar update
"""
# only update when not dragging:
#if self.is_seeking:
# return
# prevent video overread using 0.2 sec cooldown
timenow = time.time()
if (timenow - self.last_seek_time) < 0.5:
return
self.last_seek_time = timenow
was_playing = self.thread.playing
if was_playing:
self.stop()
print(self.time_slider.value())
selected_frame = int(self.num_frames * self.time_slider.value() / self.seek_ticks)
print(selected_frame)
self.thread.cap.set(cv2.CAP_PROP_POS_FRAMES, selected_frame)
# restart if it was playing
if (was_playing or self.was_playing_before) and not self.is_seeking:
self.play()
else:
self.next_frame()
def set_seek_frame(self, frame_pos):
"""Set the seek bar position to match frame
Args:
frame (int): Frame number
"""
# only update when slider not in use
if self.is_seeking:
return
slider_val = int(frame_pos * self.seek_ticks / (max(self.num_frames, 1)))
timestamp = frame_pos / self.fps
# update slider without triggering valueChange
self.time_slider.blockSignals(True)
self.time_slider.setValue(slider_val)
self.time_stamp_display.setText(f"{timestamp:.2f} s ({self.time_string(timestamp)} / {self.time_string(self.video_length)})")
self.time_slider.blockSignals(False)
def time_string(self, t):
return f"{int(t / 60):02d}:{int(t) % 60:02d}"
def destroy_thread(self):
self.thread.terminate()
def get_current_timestamp(self):
if self.thread.cap:
return self.thread.cap.get(cv2.CAP_PROP_POS_MSEC) / 1000
return 0
class CalibratorUtility(QtWidgets.QMainWindow):
def __init__(self):
"""Qt window containing camera calibration utility
"""
super().__init__()
calib_input = QtWidgets.QInputDialog.getText(self, "Calibration setting","Calibration chessboard size. w, h",
QtWidgets.QLineEdit.Normal, "14,8")[0].split(",")
try:
w, h = [min(max(int(x), 1),30) for x in calib_input]
self.chessboard_size = (w,h)
except:
print("setting to default 14,8 pattern")
self.chessboard_size = (14,8)
# Initialize UI
self.setWindowTitle("Gyroflow Calibrator {}".format(__version__))
self.setWindowIcon(QtGui.QIcon(':/media/icon.png'))
self.main_widget = QtWidgets.QWidget()
self.layout = QtWidgets.QHBoxLayout()
self.main_widget.setLayout(self.layout)
# left half of screen with player/buttons
self.left_side_widget = QtWidgets.QWidget()
self.left_layout = QtWidgets.QVBoxLayout()
self.left_side_widget.setLayout(self.left_layout)
self.layout.addWidget(self.left_side_widget)
# right half of screen with export options
self.right_side_widget = QtWidgets.QWidget()
self.right_layout = QtWidgets.QVBoxLayout()
self.right_side_widget.setLayout(self.right_layout)
self.right_side_widget.setFixedWidth(250)
self.right_layout.setAlignment(QtCore.Qt.AlignTop)
self.layout.addWidget(self.right_side_widget)
# video player with controls
self.video_viewer = VideoPlayerWidget()
self.video_viewer.enable_stretch()
self.left_layout.addWidget(self.video_viewer)
self.setCentralWidget(self.main_widget)
# control buttons for stretching [Safe area slider] [expo slider] [X]View safe area [recompute maps] [render to file]
self.calib_controls = QtWidgets.QWidget()
self.calib_controls_layout = QtWidgets.QHBoxLayout()
self.calib_controls.setLayout(self.calib_controls_layout)
self.button_height = 40
self.calib_msg = ""
#self.show_chessboard_btn = QtWidgets.QPushButton("Calibration target")
#self.show_chessboard_btn. setMinimumHeight(self.button_height)
#self.show_chessboard_btn.clicked.connect(self.chessboard_func)
#self.show_chessboard_btn.setIcon(self.style().standardIcon(QtWidgets.QStyle.SP_FileDialogListView))
#self.calib_controls_layout.addWidget(self.show_chessboard_btn)
self.open_file_btn = QtWidgets.QPushButton("Open file")
self.open_file_btn.setMinimumHeight(self.button_height)
self.open_file_btn.clicked.connect(self.open_file_func)
self.open_file_btn.setIcon(self.style().standardIcon(QtWidgets.QStyle.SP_FileIcon))
self.calib_controls_layout.addWidget(self.open_file_btn)
# button for recomputing image stretching maps
self.add_frame_button = QtWidgets.QPushButton("Add current frame")
self.add_frame_button.setMinimumHeight(self.button_height)
self.add_frame_button.clicked.connect(self.add_current_frame)
self.calib_controls_layout.addWidget(self.add_frame_button)
self.del_frame_button = QtWidgets.QPushButton("Remove last frame")
self.del_frame_button.setMinimumHeight(self.button_height)
self.del_frame_button.clicked.connect(self.remove_frame)
self.calib_controls_layout.addWidget(self.del_frame_button)
# button for recomputing image stretching maps
self.process_frames_btn = QtWidgets.QPushButton("Process loaded frames")
self.process_frames_btn.setMinimumHeight(self.button_height)
self.process_frames_btn.setEnabled(False)
self.process_frames_btn.clicked.connect(self.calibrate_frames)
self.calib_controls_layout.addWidget(self.process_frames_btn)
# button for auto lens calibration. TODO: Move to menu
#self.start_lens_calibration_btn = QtWidgets.QPushButton("Start lens calibration")
#self.start_lens_calibration_btn.setMinimumHeight(self.button_height)
#self.start_lens_calibration_btn.setEnabled(False)
#self.start_lens_calibration_btn.clicked.connect(self.start_lens_calibration)
#self.calib_controls_layout.addWidget(self.start_lens_calibration_btn)
# info text box
self.info_text = QtWidgets.QLabel("No frames loaded")
self.calib_controls_layout.addWidget(self.info_text)
# horizontal destretching
self.destretch_text = QtWidgets.QLabel("Horizontal desqueeze:")
self.calib_controls_layout.addWidget(self.destretch_text)
self.destretch_control = QtWidgets.QDoubleSpinBox(self)
self.destretch_control.setMinimum(0.01)
self.destretch_control.setMaximum(4)
self.destretch_control.setValue(1)
self.destretch_control.setDecimals(5)
self.destretch_control.setSingleStep(0.05)
self.destretch_control.setToolTip("For processing stretched footage with non-square pixel aspect ratio. 0.75 corresponds to converting 16:9 to 4:3")
self.destretch_control.valueChanged.connect(self.update_destretch)
self.calib_controls_layout.addWidget(self.destretch_control)
self.fov_scale = 1.4
# slider for adjusting FOV
self.fov_text = QtWidgets.QLabel("FOV scale ({}):".format(self.fov_scale))
self.fov_slider = QtWidgets.QSlider(QtCore.Qt.Horizontal, self)
self.fov_slider.setMinimum(8)
self.fov_slider.setValue(14)
self.fov_slider.setMaximum(30)
self.fov_slider.setMaximumWidth(300)
self.fov_slider.setSingleStep(1)
self.fov_slider.setTickInterval(1)
self.fov_slider.valueChanged.connect(self.fov_changed)
self.fov_slider.sliderReleased.connect(self.update_preview)
self.calib_controls_layout.addWidget(self.fov_text)
self.calib_controls_layout.addWidget(self.fov_slider)
# checkbox to preview lens distortion correction
self.preview_toggle_btn = QtWidgets.QCheckBox("Toggle lens correction: ")
self.preview_toggle_btn.setLayoutDirection(QtCore.Qt.RightToLeft)
self.preview_toggle_btn.stateChanged.connect(self.update_preview)
self.preview_toggle_btn.setEnabled(False)
self.calib_controls_layout.addWidget(self.preview_toggle_btn)
# add control bar to main layout
self.left_layout.addWidget(self.calib_controls)
# Right layout: Export settings
text = QtWidgets.QLabel("<h2>Preset parameters</h2>")
text.setAlignment(QtCore.Qt.AlignCenter)
self.right_layout.addWidget(text)
self.right_layout.addWidget(QtWidgets.QLabel("Camera brand (*):"))
completer = QtWidgets.QCompleter(cam_company_list)
completer.setCaseSensitivity(QtCore.Qt.CaseInsensitive)
# create line edit and add auto complete
self.cam_company_input = QtWidgets.QLineEdit()
self.cam_company_input.setCompleter(completer)
self.cam_company_input.setPlaceholderText(random.choice(cam_company_list + ["Potatocam"]))
self.right_layout.addWidget(self.cam_company_input)
self.right_layout.addWidget(QtWidgets.QLabel("Camera make (*)"))
self.cam_model_input = QtWidgets.QLineEdit()
self.cam_model_input.setPlaceholderText(random.choice(["Hero5", "D5100", "Hero8", "Komodo", "Pocket Cinema", "2000D", "Alexa", "Potato"])) # Don't ask...
self.right_layout.addWidget(self.cam_model_input)
self.right_layout.addWidget(QtWidgets.QLabel("Lens name (leave blank if not relevant)"))
self.cam_lens_input = QtWidgets.QLineEdit()
self.cam_lens_input.setPlaceholderText(random.choice(["Nikkor 35mm f/1.8G", "EF-S 18-55mm", "Sigma 16mm F/1.4", "E 50mm F/1.8 OSS", "Tamron 17-28mm f/2.8 Di", "Rokinon 14mm T3.1", "PotatoGlass deluxe"]))
self.right_layout.addWidget(self.cam_lens_input)
self.right_layout.addWidget(QtWidgets.QLabel("Recording setting (*)"))
self.cam_setting_input = QtWidgets.QLineEdit()
self.cam_setting_input.setPlaceholderText("2160p 4by3 wide")
self.right_layout.addWidget(self.cam_setting_input)
self.right_layout.addWidget(QtWidgets.QLabel("Other relevant note"))
self.cam_note_input = QtWidgets.QLineEdit()
self.cam_note_input.setPlaceholderText(random.choice(["ND filter installed", "Bad light conditions", "Test calibration, don't use", "Can't believe potatoes can record video"]))
self.right_layout.addWidget(self.cam_note_input)
self.right_layout.addWidget(QtWidgets.QLabel("Name of calibrator (*)"))
self.calibrated_by_input = QtWidgets.QLineEdit()
self.calibrated_by_input.setText("Anonymous")
self.right_layout.addWidget(self.calibrated_by_input)
# button for exporting preset
self.right_layout.addWidget(QtWidgets.QLabel("Check before saving:\nLow RMS error (<5 works, <1 is best)\nImage looks right after 'toggle lens correction'"))
self.export_button = QtWidgets.QPushButton("Export preset file")
self.export_button.setMinimumHeight(self.button_height)
self.export_button.clicked.connect(self.save_preset_file)
self.export_button.setEnabled(False)
self.right_layout.addWidget(self.export_button, alignment=QtCore.Qt.AlignBottom)
self.right_layout.addWidget(QtWidgets.QLabel("Want to help? Send new presets here:<br><a href='http://gyroflow.xyz/lens'>http://gyroflow.xyz/lens</a>"))
# file menu setup
menubar = self.menuBar()
filemenu = menubar.addMenu('&File')
# https://joekuan.wordpress.com/2015/09/23/list-of-qt-icons/
icon = self.style().standardIcon(QtWidgets.QStyle.SP_DirOpenIcon)
self.open_file = QtWidgets.QAction(icon, 'Open file', self)
self.open_file.setShortcut("Ctrl+O")
self.open_file.triggered.connect(self.open_file_func)
filemenu.addAction(self.open_file)
icon = self.style().standardIcon(QtWidgets.QStyle.SP_FileLinkIcon)
self.open_preset = QtWidgets.QAction(icon, 'Open calibration preset', self)
self.open_preset.triggered.connect(self.open_preset_func)
filemenu.addAction(self.open_preset)
icon = self.style().standardIcon(QtWidgets.QStyle.SP_FileDialogListView)
self.show_chessboard = QtWidgets.QAction(icon, 'Calibration target', self)
self.show_chessboard.triggered.connect(self.chessboard_func)
filemenu.addAction(self.show_chessboard)
icon = self.style().standardIcon(QtWidgets.QStyle.SP_MediaPlay)
self.start_lens_calibration_btn = QtWidgets.QAction(icon, 'Start auto calibration', self)
self.start_lens_calibration_btn.triggered.connect(self.start_lens_calibration)
self.start_lens_calibration_btn.setEnabled(False)
filemenu.addAction(self.start_lens_calibration_btn)
self.chess_window = None
self.statusBar()
self.infile_path = ""
self.show()
self.main_widget.show()
# initialize instance of calibrator class
self.calibrator = calibrate_video.FisheyeCalibrator(chessboard_size=self.chessboard_size)
def update_destretch(self):
print(f"Update destretch to {self.destretch_control.value()}")
self.calibrator.set_horizontal_stretch(self.destretch_control.value())
self.video_viewer.set_horizontal_stretch(self.destretch_control.value())
self.video_viewer.update_frame()
def open_file_func(self):
"""Open file using Qt filedialog
"""
path = QtWidgets.QFileDialog.getOpenFileName(self, "Open video file", filter="Video (*.mp4 *.avi *.mov *.MP4 *.AVI *.MOV)")
self.infile_path = path[0]
self.video_viewer.set_video_path(path[0])
self.video_viewer.next_frame()
self.start_lens_calibration_btn.setEnabled(True)
# reset calibrator and info
self.calibrator = calibrate_video.FisheyeCalibrator(chessboard_size=self.chessboard_size)
self.update_calib_info()
def open_preset_func(self):
"""Load in calibration preset
"""
path = QtWidgets.QFileDialog.getOpenFileName(self, "Open preset file", filter="JSON preset (*.json)")
if (len(path[0]) == 0):
print("No file selected")
return
self.calibrator.load_calibration_json(path[0])
self.update_calib_info()
def chessboard_func(self):
"""Function to show the calibration chessboard in a new window
"""
print("Showing chessboard")
board_width = self.chessboard_size[0]
board_height = self.chessboard_size[1]
self.chess_window = QtWidgets.QWidget()
self.chess_window.setWindowTitle(f"Calibration target ({board_width}x{board_height})")
self.chess_window.setStyleSheet("background-color:white;")
self.chess_layout = QtWidgets.QVBoxLayout()
self.chess_window.setLayout(self.chess_layout)
# VideoPlayer class doubles as a auto resizing image viewer
# generate chessboard pattern so no external images are needed
chess_pic = np.zeros((board_height + 3,board_width + 3), np.uint8)
# Set white squares
chess_pic[::2,::2] = 255
chess_pic[1::2,1::2] = 255
# Borders to white
chess_pic[0,:] = 255
chess_pic[-1,:]= 255
chess_pic[:,0]= 255
chess_pic[:,-1]= 255
# double size and reduce borders slightly
chess_pic = cv2.resize(chess_pic,((board_width+3)*2, (board_height+3)*2), interpolation=cv2.INTER_NEAREST)
chess_pic = chess_pic[1:-1,:]
# convert to Qt image
h, w = chess_pic.shape
convertToQtFormat = QtGui.QImage(chess_pic.data, w, h, w, QtGui.QImage.Format_Grayscale8)
# VideoPlayer doubles as a autoresiznig image viewer
chess_viewer = VideoPlayer(convertToQtFormat.copy())
self.chess_layout.addWidget(chess_viewer)
self.chess_window.resize(500, 500)
self.chess_window.showMaximized()
def closeEvent(self, event):
print("Closing now")
self.video_viewer.destroy_thread()
event.accept()
def fov_changed(self):
self.fov_scale = self.fov_slider.value()/10
self.fov_text.setText("FOV scale ({}):".format(self.fov_scale))
self.video_viewer.update_frame()
def save_preset_file(self):
"""save camera preset file
"""
print("Exporting preset")
# Window to set export data
cam_brand = self.cam_company_input.text()
cam_model = self.cam_model_input.text()
cam_lens = self.cam_lens_input.text()
cam_setting = self.cam_setting_input.text()
cam_note = self.cam_note_input.text()
calibrated_by = self.calibrated_by_input.text()
if not (cam_brand and cam_model and cam_setting):
self.show_error("Missing information about the camera system")
return
if not calibrated_by:
self.show_error("You went through all the trouble to make a calibration profile but don't want credit? I'll just fill in 'Anonymous' for you, but feel free to write a (nick)name or a handle instead.")
self.calibrated_by_input.setText("Anonymous")
return
calib_name = f"{cam_brand}_{cam_model}_{cam_lens}_{cam_setting}".replace("__", "_").replace("__", "_")
calib_name = " ".join(calib_name.replace("_", " ").split())
# make sure name works
default_file_name = calib_name.replace("@", "At") # 18-55mm@18mm -> 18-55mmAt18mm, eh works I guess
default_file_name = default_file_name.replace("/", "_").replace(".", "_").replace(" ","_") # f/1.8 -> f_1_8
default_file_name = "".join([c for c in default_file_name if c.isalpha() or c.isdigit() or c in "_-"]).rstrip()
default_file_name = "_".join(default_file_name.replace("_", " ").split())
filename = QtWidgets.QFileDialog.getSaveFileName(self, "Export calibration preset", default_file_name,
filter="JSON preset (*.json)")
print(filename[0])
if len(filename[0]) == 0:
self.show_warning("No output file given")
return
self.calibrator.save_calibration_json(filename[0], calib_name=calib_name, camera_brand=cam_brand, camera_model=cam_model,
lens_model=cam_lens, camera_setting=cam_setting, note=cam_note, calibrated_by=calibrated_by)
def show_error(self, msg):
QtWidgets.QMessageBox.critical(self, "Something's gone awfully wrong", msg)
return
#self.err_window = QtWidgets.QMessageBox(self)
#self.err_window.setIcon(QtWidgets.QMessageBox.Warning)
#self.err_window.setText(msg)
#self.err_window.setWindowTitle("Something's gone awry")
#self.err_window.exec_()
#self.err_window.close()
def show_warning(self, msg):
QtWidgets.QMessageBox.critical(self, "Something's gone awry", msg)
def add_current_frame(self):
print("Adding frame")
ret, self.calib_msg, corners = self.calibrator.add_calib_image(self.video_viewer.thread.frame)
if ret:
self.video_viewer.set_cv_frame(cv2.drawChessboardCorners(self.video_viewer.thread.frame, self.calibrator.chessboard_size,corners,True) )
self.update_calib_info()
if self.calibrator.num_images > 0:
self.process_frames_btn.setEnabled(True)
def remove_frame(self):
"""Remove last calibration frame
"""
self.calibrator.remove_calib_image()
self.update_calib_info()
def start_lens_calibration(self):
self.calibrator.new_calibration()
n_calibration_frames = 50
cap = cv2.VideoCapture(self.infile_path)
num_frames = int(cap.get(cv2.CAP_PROP_FRAME_COUNT))
print(f"Starting lens calibration with {num_frames} frames")
t = datetime.now()
good_frames = []
for n in np.linspace(0, num_frames - 1, n_calibration_frames):
n = int(n)
cap.set(cv2.CAP_PROP_POS_FRAMES, n)
ret, frame = cap.read()
self.calibrator.num_processed_images += 1
if ret:
print("\n\nFrame:", n)
rgbImage = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
ret, message, corners = self.calibrator.add_calib_image(frame)
print(message)
self.update_calib_info()
if ret:
cv2.drawChessboardCorners(rgbImage, self.calibrator.chessboard_size, corners, True)
scaled = cv2.resize(rgbImage, (960, 720))
cv2.imshow('Chessboard detection', scaled)
cv2.waitKey(1)
rms = self.calibrator.compute_calibration()
print("RMS:", rms)
if rms > 3:
self.calibrator.remove_calib_image()
if rms != 100:
print("rms too high, removing image")
else:
good_frames.append(n)
self.calibrator.num_images_used += 1
else:
self.calibrator.remove_calib_image()
print("corners not detected, removing image")
self.update_calib_info()
cv2.destroyWindow('Chessboard detection')