INNER CODE UNIT · Python

CropImage

minivision-ai/Silent-Face-Anti-Spoofing · src/generate_patches.py:15

class CropImage:
    @staticmethod
    def _get_new_box(src_w, src_h, bbox, scale):
        x = bbox[0]
        y = bbox[1]
        box_w = bbox[2]
        box_h = bbox[3]

        scale = min((src_h-1)/box_h, min((src_w-1)/box_w, scale))

        new_width = box_w * scale
        new_height = box_h * scale
        center_x, center_y = box_w/2+x, box_h/2+y

        left_top_x = center_x-new_width/2
        left_top_y = center_y-new_height/2
        right_bottom_x = center_x+new_width/2
        right_bottom_y = center_y+new_height/2

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