Car detection with YOLO: mask operation and dimensions in yolo_filter_boxes function

[ai_curious]

YOLO assignment exercise 1 shape question

Hello, For exercise 1 in the YOLO assignment, the tensor box_class_scores is of the shape (19,19,5) and the boolean mask filtering_mask is also of the shape (19,19,5). However, after doing scores = tf.boolean_mask(box_class_scores, filtering_mask), the output shape is (1789, ) and I’m not sure where this 1789 came from. I was expecting the shape to be (1805,) where 1805 = 19*19*5. I must missed something here and thank you in advance for helping out !

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