manford / ssd_postprocessing

Postprocessing script for ssd in tensorflow object detection API

How Anchor Boxes Are Generated

See create_ssd_anchors in Multiple_grid Anchor Generator in TensorFlow object detection API

Tensor Format

Class predictors

• Before reshape & concat: H x W x Anchors x (Classes+1)
• After reshape & concat: [H0xW0xAnchors0 ... H5xW5xAnchors5] x (Classes+1)

Box predictors

• Before reshape & concat: H x W x Anchors x 4 (y,x,h,w)
• After reshape & concat: [H0xW0xAnchors0 ... H5xW5xAnchors5] x 4