VPIWrapMap can not be allocate

[dory1102201]

hello,
here is the code I allocate vpi map,
but vpiWarpMapAllocData return 2,
terminal shows:
what(): VPI_ERROR_INVALID_ARGUMENT: Number of horizontal regions must be between 1 and 4,

    VPIWarpMap map            = {};
    memset(&map, 0, sizeof(map));

    map.grid.numHorizRegions  = 1;
    map.grid.numVertRegions   = 1;

    map.grid.regionWidth[0]   = rec_width;  // 640
    map.grid.regionHeight[0]  = rec_height;  //480
    map.grid.horizInterval[0] = 1;
    map.grid.vertInterval[0]  = 1;
    printf("num region:%d\n", map.grid.numHorizRegions);
    CHECK_STATUS(vpiWarpMapAllocData(&map));

[AastaLLL]

Hi,

We tested the below allocation and it can work as expected.

        VPIWarpMap map            = {};
        map.grid.numHorizRegions  = 1;
        map.grid.numVertRegions   = 1;
        map.grid.regionWidth[0]   = 640;
        map.grid.regionHeight[0]  = 480;
        map.grid.horizInterval[0] = 1;
        map.grid.vertInterval[0]  = 1;
        CHECK_STATUS(vpiWarpMapAllocData(&map));

Could you double-check the issue?
If the error still occurs, could you share a runnable sample with us?

Thanks.

[dory1102201]

Hi,
here is runnable sample
11-fisheye.zip (678.7 KB)

[AastaLLL]

Hi,

Thanks for sharing the sample.

When we test this locally, the app looks for an input source to work.
Could you share the file with us as well?

$ ./vpi_sample_11_fisheye 
[ WARN:0@0.020] global loadsave.cpp:248 findDecoder imread_('/home/orin-nx/seeker_omni_dataset/left/frame0000.jpg'): can't open/read file: check file path/integrity
terminate called after throwing an instance of 'std::runtime_error'
  what():  Can't read /home/orin-nx/seeker_omni_dataset/left/frame0000.jpg
Aborted (core dumped)

Thanks.

[dory1102201]

image.zip (619.8 KB)

hi, here is image zip
by the way, i found fisheye recitfy is for mono not for stereo
then i rectify stereo with opencv
can remap use with VPI?

Thank you

[AastaLLL]

Hi,

Thanks for sharing the image.
We will give it a try and provide more info to you.

You can run OpenCV’s algorithm to get the map and use VPI remap to warp the image.

Thanks.

[AastaLLL]

Hi,

We try the same on VPI 3.2 of JetPack 6.2.
It can work correctly without errors.

Please also give it a try:

$ ./vpi_sample_11_fisheye 
in wrap opencv
in wrap opencv
map return type: 2
error occur
cam_matrix[0][0] : 1667.657593 
cam_matrix[0][1] : 0.000000 
cam_matrix[0][2] : 520.105225 
cam_matrix[1][0] : 0.000000 
cam_matrix[1][1] : 1655.588867 
cam_matrix[1][2] : 459.897186 
tran_matrix[0][0] : -0.001894 
tran_matrix[0][1] : -0.024520 
tran_matrix[0][2] : -0.999698 
tran_matrix[0][3] : -0.047487 
tran_matrix[1][0] : 0.002791 
tran_matrix[1][1] : 0.999695 
tran_matrix[1][2] : -0.024525 
tran_matrix[1][3] : -0.001042 
tran_matrix[2][0] : 0.999994 
tran_matrix[2][1] : -0.002836 
tran_matrix[2][2] : -0.001825 
tran_matrix[2][3] : -0.047252 
after fisheye dist : 1667.657593 
after fisheye dist : 1687.516602 
after fisheye dist : 0.000000 
after fisheye dist : 0.000000 
after fisheye dist : 520.105225 
after fisheye dist : 545.379517 
after fisheye dist : 0.000000 
after fisheye dist : 0.000000 
after fisheye dist : 1655.588867 
after fisheye dist : 1675.695435 
after fisheye dist : 459.897186 
after fisheye dist : 426.758575 
payload : 0
1
image size 2
2
3
4
5
remap status : 0 
7
8
2
3
4
5
remap status : 0 
7
8

Thanks.