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import numpy as np
import cv2
from scipy.ndimage import label, binary_dilation
import gradio as gr
def create_bridged_stencil(image, min_bridges=2, bridge_width=2):
# Convert the image to grayscale if it's not already
if len(image.shape) == 3:
img = cv2.cvtColor(image, cv2.COLOR_RGB2GRAY)
else:
img = image
# Threshold the image to create a binary image
_, binary = cv2.threshold(img, 127, 255, cv2.THRESH_BINARY_INV)
# Find connected components (islands)
labeled, num_features = label(binary)
# Create a copy of the binary image for adding bridges
bridged = binary.copy()
# Function to add a bridge between two points
def add_bridge(start, end):
cv2.line(bridged, start, end, 255, bridge_width)
# For each island
for i in range(1, num_features + 1):
island = (labeled == i)
# Find the contour of the island
contours, _ = cv2.findContours((island * 255).astype(np.uint8), cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE)
contour = contours[0]
# Get the convex hull of the contour
hull = cv2.convexHull(contour)
# Find the center of the island
M = cv2.moments(contour)
if M["m00"] != 0:
cx = int(M["m10"] / M["m00"])
cy = int(M["m01"] / M["m00"])
else:
cx, cy = np.mean(contour, axis=0)[0]
# Add bridges from the center to the convex hull points
num_bridges = 0
for point in hull:
if num_bridges >= min_bridges:
break
add_bridge((cx, cy), tuple(point[0]))
num_bridges += 1
# Dilate the bridged image to make bridges more prominent
bridged = binary_dilation(bridged, iterations=1)
# Convert back to RGB for Gradio output
return cv2.cvtColor((bridged * 255).astype(np.uint8), cv2.COLOR_GRAY2RGB)
def process_image(input_image, min_bridges, bridge_width):
result = create_bridged_stencil(input_image, min_bridges, bridge_width)
return result
# Create the Gradio interface
iface = gr.Interface(
fn=process_image,
inputs=[
gr.Image(type="numpy", label="Input Image"),
gr.Slider(minimum=1, maximum=5, step=1, value=2, label="Minimum Bridges"),
gr.Slider(minimum=1, maximum=5, step=1, value=2, label="Bridge Width")
],
outputs=gr.Image(type="numpy", label="Bridged Stencil"),
title="Bridged Stencil Generator",
description="Upload an image to create a bridged stencil. Adjust the minimum number of bridges and bridge width as needed."
)
# Launch the interface
iface.launch() |