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Running
on
Zero
from PIL import Image, ImageOps | |
import numpy as np | |
import cv2 | |
def canny_process(image_path, threshold1, threshold2): | |
# 画像を開き、RGBA形式に変換して透過情報を保持 | |
img = Image.open(image_path) | |
img = img.convert("RGBA") | |
canvas_image = Image.new('RGBA', img.size, (255, 255, 255, 255)) | |
# 画像をキャンバスにペーストし、透過部分が白色になるように設定 | |
canvas_image.paste(img, (0, 0), img) | |
# RGBAからRGBに変換し、透過部分を白色にする | |
image_pil = canvas_image.convert("RGB") | |
image_np = np.array(image_pil) | |
# グレースケール変換 | |
gray = cv2.cvtColor(image_np, cv2.COLOR_RGB2GRAY) | |
# Cannyエッジ検出 | |
edges = cv2.Canny(gray, threshold1, threshold2) | |
canny = Image.fromarray(edges) | |
return canny | |
def resize_image_aspect_ratio(image): | |
# 元の画像サイズを取得 | |
original_width, original_height = image.size | |
# アスペクト比を計算 | |
aspect_ratio = original_width / original_height | |
# 標準のアスペクト比サイズを定義 | |
sizes = { | |
1: (1024, 1024), # 正方形 | |
4/3: (1152, 896), # 横長画像 | |
3/2: (1216, 832), | |
16/9: (1344, 768), | |
21/9: (1568, 672), | |
3/1: (1728, 576), | |
1/4: (512, 2048), # 縦長画像 | |
1/3: (576, 1728), | |
9/16: (768, 1344), | |
2/3: (832, 1216), | |
3/4: (896, 1152) | |
} | |
# 最も近いアスペクト比を見つける | |
closest_aspect_ratio = min(sizes.keys(), key=lambda x: abs(x - aspect_ratio)) | |
target_width, target_height = sizes[closest_aspect_ratio] | |
# リサイズ処理 | |
resized_image = image.resize((target_width, target_height), Image.LANCZOS) | |
return resized_image | |
def base_generation(size, color): | |
canvas = Image.new("RGBA", size, color) | |
return canvas |