83 lines
2.9 KiB
Python
83 lines
2.9 KiB
Python
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import os
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import cv2
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import argparse
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# Set up the argument parser
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parser = argparse.ArgumentParser(description="Visualize image files and display pixel values on hover.")
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parser.add_argument('path', help='The path to an image file.')
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# Parse the arguments
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args = parser.parse_args()
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img_path = args.path
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# Function to display the image and pixel values along with the frame index
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def show_pixel_values(image_path):
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def mouse_event(event, x, y, flags, param):
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if event == cv2.EVENT_MOUSEMOVE:
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pixel_value = img[y, x]
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text = f'Value: {pixel_value}, Location: ({x},{y})'
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img_text = img.copy()
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# Overlay the frame index
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frame_index = get_frame_index(image_path)
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cv2.putText(img_text, f'Frame: {frame_index}', (10, img_text.shape[0] - 10), cv2.FONT_HERSHEY_SIMPLEX, 0.7, (255, 255, 255), 1, cv2.LINE_AA)
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cv2.putText(img_text, text, (50, 30), cv2.FONT_HERSHEY_SIMPLEX, 0.7, (255, 255, 255), 1, cv2.LINE_AA)
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cv2.imshow('Image', img_text)
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img = cv2.imread(image_path, cv2.IMREAD_UNCHANGED)
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if img is None:
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print(f"Failed to load image at {image_path}. Check the file path and integrity.")
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return False
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cv2.namedWindow('Image')
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cv2.setMouseCallback('Image', mouse_event)
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cv2.imshow('Image', img)
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return True
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# Function to get the frame index from the filename
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def get_frame_index(filename):
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return os.path.splitext(os.path.basename(filename))[0][-4:]
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# Function to modify the numeric part of the filename
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def modify_filename(filename, increment=True):
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directory, basename = os.path.split(filename)
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basename_no_ext, ext = os.path.splitext(basename)
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print(f"Modifying filename {basename_no_ext} in directory {directory}.")
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if len(basename_no_ext) < 4 or not basename_no_ext[-4:].isdigit():
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raise ValueError("Filename does not end with five digits.")
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num_part = basename_no_ext[-4:]
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num = int(num_part) + (1 if increment else -1)
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new_name = f"{basename_no_ext[:-4]}{num:04d}{ext}"
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new_path = os.path.join(directory, new_name)
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if not os.path.exists(new_path):
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print(f"No file found at {new_path}.")
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return filename # Return the original filename if the new file does not exist
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return new_path
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# Ensure the provided path is a valid file
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if not os.path.isfile(img_path):
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print("The provided path is not a valid file.")
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exit(1)
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# Initially display the image
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if not show_pixel_values(img_path):
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exit(1)
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# Main loop to navigate through images
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while True:
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key = cv2.waitKey(0)
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if key == 27: # ESC key to exit
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break
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elif key == 91: # '[' key
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img_path = modify_filename(img_path, increment=False)
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elif key == 93: # ']' key
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img_path = modify_filename(img_path, increment=True)
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# Show the new image
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if not show_pixel_values(img_path):
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break # Exit the loop if the new image cannot be loaded
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cv2.destroyAllWindows()
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