Data Annotation

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  • Bounding box of ImageNet images
 Annotation file format: 
 Img_W Img_H xmin xmax ymin ymax
  • Problems of Current Approach
  1. some images are too large
  2. the "null" string in result should be replaced by -1 -1 -1 -1
  3. the following plot is that, if each image has a certain number of annotations (x axis), how many images can be inferred a true bounding box.

Valid img ratio with respect to num of annotation.png

By the plot, we suggest using 6 annotations for each image to label.