OzlemAkgunoglu
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Delete photo_filter.py
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photo_filter.py
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'''
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author : OzlemAkgunoglu
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github : https://github.com/OzlemAkgunoglu
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Dynamic Photo Filter App
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This is a Dynamic Photo Filter App that allows you to apply various filters to your images.
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Adjust brightness, contrast, sharpening, and select a filter for real-time changes.
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And this app is created using OpenCV and Gradio. Thank you for using it. '''
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#Let's load the necessary libraries
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import cv2 as cv #OpenCV for image processing
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import numpy as np #Numpy for arrays
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import gradio as gr #Gradio for UI
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# Let's define the filter functions
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def apply_grayscale(image):
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return cv.cvtColor(image, cv.COLOR_BGR2GRAY) #Convert the image to grayscale
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#Sepia filter function
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def apply_sepia(image):
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sepia_filter = np.array([[0.272, 0.534, 0.131],
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[0.349, 0.686, 0.168],
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[0.393, 0.769, 0.189]])
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sepia_image = cv.transform(image, sepia_filter) #Apply the filter
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return np.clip(sepia_image, 0, 255).astype(np.uint8) #clip to hold values between 0 and 255 prevent excessive brightness or darkening.
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def apply_negative(image):
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return cv.bitwise_not(image) #Invert the image
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#sketch filter
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'''Apply Gaussian blur to decrease the noise
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and remove unwanted details in the image for better sketch effect '''
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def apply_sketch(image):
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gray = cv.cvtColor(image, cv.COLOR_BGR2GRAY) #Convert the image to grayscale
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inv = cv.bitwise_not(gray) #Invert the grayscale image
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blurred = cv.GaussianBlur(inv, (21, 21), sigmaX=0, sigmaY=0)
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sketch_image = cv.divide(gray, 255 - blurred, scale=256)
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# divide= gray / (255 - blurred) Normalizes the division result to prevent overly high values by scaling with 256
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return sketch_image
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def apply_sharpen(image, sharpening):
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sharpening_filter = np.array([[0, -1, 0],
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[-1, 5 + sharpening, -1],
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[0, -1, 0]])
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return cv.filter2D(image, -1, sharpening_filter) #Apply the filter each pixel is multiplied by the value in the kernel
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def apply_edge_detection(image):
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return cv.Canny(image, 100, 200)
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def apply_fall_filter(frame):
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fall_filter = np.array([[0.393, 0.769, 0.189],
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[0.349, 0.686, 0.168],
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[0.272, 0.534, 0.131]])
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return cv.transform(frame, fall_filter)
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# Dictionary to map filter names to functions
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filter_functions = {
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"Grayscale": apply_grayscale,
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"Sepia": apply_sepia,
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"Negative": apply_negative,
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"Sketch": apply_sketch,
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"Sharpen": apply_sharpen,
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"Edge Detection": apply_edge_detection,
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"Fall": apply_fall_filter
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}
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# Main function to apply selected filters
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def apply_filters(image, filter_type, brightness, contrast, sharpening):
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if image is None:
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print("Input image is empty!") #for debugging
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return None # Return None if the input image is empty
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# Adjust brightness and contrast
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image = cv.convertScaleAbs(image, alpha=contrast, beta=brightness)
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#for debugging
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#print("Image after brightness and contrast adjustment:", image)
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# Apply the selected filter from dictionary called filter_functions in line 53
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if filter_type in filter_functions:
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if filter_type == "Sharpen":
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image = filter_functions[filter_type](image, sharpening) # Calls the Sharpen filter with the sharpening parameter for custom sharpening level
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else:
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image = filter_functions[filter_type](image)
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return image
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# Define Interface
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with gr.Blocks() as app:
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# Title and Description
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gr.Markdown("<h1 style='text-align: center;'>Dynamic Photo Filter App</h1>")
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gr.Markdown("This app allows you to apply various filters to your images. Adjust brightness, contrast, sharpening, and select a filter for real-time changes.")
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# Choices and Sliders at the Top
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with gr.Row():
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filter_choice = gr.Radio(["Original", "Grayscale", "Sketch", "Sepia", "Negative", "Sharpen", "Edge Detection","Fall"],label="Filter")
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with gr.Column():
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brightness_slider = gr.Slider(-100, 100, step=1, label="Brightness", value=0)
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contrast_slider = gr.Slider(0.5, 3.0, step=0.1, label="Contrast", value=1.0)
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sharpening_slider = gr.Slider(0, 5, step=0.1, label="Sharpening", value=0)
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# Horizontal display of the images
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with gr.Row():
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image_input = gr.Image(label="Upload Image", type="numpy")
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image_output = gr.Image(label="Filtered Image")
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# Link events for real-time updates
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image_input.change(apply_filters, inputs=[image_input, filter_choice, brightness_slider, contrast_slider, sharpening_slider], outputs=image_output)
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filter_choice.change(apply_filters, inputs=[image_input, filter_choice, brightness_slider, contrast_slider, sharpening_slider], outputs=image_output)
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brightness_slider.change(apply_filters, inputs=[image_input, filter_choice, brightness_slider, contrast_slider, sharpening_slider], outputs=image_output)
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contrast_slider.change(apply_filters, inputs=[image_input, filter_choice, brightness_slider, contrast_slider, sharpening_slider], outputs=image_output)
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sharpening_slider.change(apply_filters, inputs=[image_input, filter_choice, brightness_slider, contrast_slider, sharpening_slider], outputs=image_output)
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app.launch(share=True)
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