mahyarnajibi / SSH

SSH: Single Stage Headless Face Detector
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adding another detection layer on conv3_3 #28

Closed ghost closed 6 years ago

ghost commented 6 years ago

Dear @mahyarnajibi and @po0ya, I was wondering if during implementation, have you guys experimented adding another detection layer at conv3_3 which has feat_stride: 4? Since wider face consists a lot of small faces. If yes, could you please share some insights? many many thanks.

po0ya commented 6 years ago

Hey, feat_stride: 4 requires a higher resolution feature map than conv4_3, else we will be predicting two different values from the same location. Since conv4_3 feature map dimensions are 1/8 of the input's.

Maybe a new module on conv3_3. I think we tried it and it didn't make that much of a difference. It's worthwhile to do an analysis to see what is "recall vs size" of the smallest scale detection module for gt boxes with dim less than 8 with and without the new module.

On Wed, Jun 6, 2018, 7:50 AM loackerc notifications@github.com wrote:

Dear @mahyarnajibi https://github.com/mahyarnajibi and @po0ya https://github.com/po0ya, I was wondering if during implementation, have you guys experimented adding another detection layer at conv3_3 which has feat_stride: 4? Since wider face consists a lot of small faces. If yes, could you please share some insights? many many thanks.

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