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hog descriptors

Alice
Prodigy 240 points

hi

I use sdk2.5 usecase --- object detection to do pedestrian detection, and I try to edit its parameters (like block size/ overlap and so on)...

I want to check its result as feature vector ... HOW can I do this way?

ex. on open cv   http://lear.inrialpes.fr/people/triggs/pubs/Dalal-cvpr05.pdf

image size(64*128)

block size(16*16)/ cell size(8*8) / block stride(8*8)

then we can get 3780 of features and know their values.

thanks a lot

by Alice

  • 0
    TI__Mastermind 29520 points
    Hello Alice,

    TI's Vision SDK supports and provides an implementation of vision algorithms used for ADAS applications.
    Algorithms are running on Embedded Vision Engine (EVE) module. EVE is a high-performance.
    The basic feature of EVE module algorithms use Region of Interest (ROI) and block matching.

    I suggest you to obtain more information about Vision SDK from your FAE.
    Vision SDK is under NDA agreement.


    Best regards,
    Yanko
  • 0 in reply to Yanko Todorov-XID
    TI__Mastermind 29520 points

    Hello Alice,

    I made an investigation for your questions.

    There are algorithms for Histogram of Oriented Gradients (HOG) in Vision SDK 2.5.

    bam_vcop_hog_vector.h header files defines interfaces for integrating hog vector compute kernel into Block-based Acceleration Manager.

    #Q: I want to check its result as feature vector ... HOW can I do this way?


    The answer of this question you can find in following files:

    VISION_SDK_02_05_00_01/ti_components/algorithms_codecs/eve_sw_01_07_00_00/kernels/inc/ vcop_hog_vector_kernel.c

    VISION_SDK_02_05_00_01/ti_components/algorithms_codecs/eve_sw_01_07_00_00/kernels/vlib/vcop_hog_vector/test/ vcop_pd_hog_vector_tb.c

    See function - int hog_computation(unsigned short * inPtr,unsigned short * refPtr,unsigned short pitch)

    I note for size of frame and block features:

    #define FRM_WIDTH   (256/4)
    #define FRM_HEIGHT  (488/4)
    #define BLK_WIDTH   (32)
    #define BLK_HEIGHT  (32)

    I hope, it will help you.

    Best regards,

    Yanko

  • 0 in reply to Yanko Todorov-XID
    Prodigy 240 points
    Amazing!
    Thanks a lot!!!!!!!