Implement thumbnail generation

scripts/resize-img

@@ -0,0 +1,62 @@
+#!/usr/bin/python
+from PIL import Image
+import sys
+
+
+def main():
+    target_width = 2048
+
+    argn = len(sys.argv)
+
+    if argn == 1:
+        print("You must specify an input file")
+        exit(1)
+    elif argn == 2:
+        print("You must specify an output file")
+        exit(1)
+
+    input_image_path = sys.argv[1]
+    output_image_path = sys.argv[2]
+
+    try:
+        image = Image.open(input_image_path)
+    except IOError:
+        print(f"Cannot open image file {input_image_path}")
+        exit(1)
+
+    width, height = image.size
+    new_height = int(target_width * height / width)
+
+    image = image.resize((target_width, new_height), Image.Resampling.BICUBIC)
+    image = rotate_image(image)
+
+    kwargs = {"quality": 50}
+    if "exif" in image.info.keys():
+        kwargs["exif"] = image.info["exif"]
+
+    try:
+        image.save(output_image_path, **kwargs)
+    except IOError:
+        print(f"Cannot save file {output_image_path}")
+        exit(1)
+
+
+def rotate_image(image):
+    exif = image.getexif()
+    if exif is None:
+        return image
+
+    orientation = exif.get(0x0012, 1)  # 0x0112 is the EXIF code for orientation
+    if orientation == 1:
+        return image
+    elif orientation == 3:
+        image = image.rotate(180, expand=True)
+    elif orientation == 6:
+        image = image.rotate(270, expand=True)
+    elif orientation == 8:
+        image = image.rotate(90, expand=True)
+    return image
+
+
+if __name__ == "__main__":
+    main()