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TDA4VM: convert keypoint from fisheye domain to line domain in app_tidl_avp

yang yang
Prodigy 225 points
Part Number: TDA4VM

Tool/software:

Hello,

  In the post-processing node of the demo "app_tidl_avp", I noticed that c66 converted the detected keypoint coordinates from  fisheye domain to line domain, and then inserted interpolation points.

  The size of the input fisheye image is 1280x720, which changes to 512x512 after scalar node. In the transformation function "tiadalg_fisheye_transformation_c66", prms ->prms_host. inter_center_x_fact=10, prms ->prms_host. inter_center_y_fact=2. Can I consider it to convert the key points detected on the fisheye image size of 512x512 to coordinate points on the line field of 5120x1024?

  If I want to convert a key point on a input fisheye image of 1280x720 to a coordinate point on a straight line field of 1280x720 size, can I achieve this by using scaling factors and changing the inter_center_x_fact, inter_center_y_fact? Or do you have any other suggestions？

  Thanks.

  • 0
    Prodigy 225 points

    Is there anyone who can answer this question? Thank you

  • +1 in reply to yang yang
    TI__Expert 4725 points

    Can I consider it to convert the key points detected on the fisheye image size of 512x512 to coordinate points on the line field of 5120x1024?

    --> Yes this understanding is correct

    If I want to convert a key point on a input fisheye image of 1280x720 to a coordinate point on a straight line field of 1280x720 size, can I achieve this by using scaling factors and changing the inter_center_x_fact, inter_center_y_fact?

    --> Ideally Yes. But we have not tested all possible combination of this.