OpenCV Error: Assertion failed (0 <= roi.x && 0 <= roi.width && roi.x + roi.width <= m.cols && 0 <= roi.y && 0 <= roi.height && roi.y + roi.height <= m.rows) in Mat, file /builds/sl/ZEDKit/lib/src/sl_core/opencv/core/matrix.cpp, line 508 Segmentation fault (core dumped)

[ASingh245]

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Description

I am using the ZED2 Camera on Jetson Xavier AGX. The ZED SDK is installed for Jetson Jetpack 4.6. When I try to execute the opencv_dnn_yolov4 from https://github.com/stereolabs/zed-examples/tree/master/object%20detection/custom%20detector/cpp/opencv_dnn_yolov4. The camera opens for 1 second and closes after that with the error mentioned as:
OpenCV Error: Assertion failed (0 <= roi.x && 0 <= roi.width && roi.x + roi.width <= m.cols && 0 <= roi.y && 0 <= roi.height && roi.y + roi.height <= m.rows) in Mat, file /builds/sl/ZEDKit/lib/src/sl_core/opencv/core/matrix.cpp, line 508 Segmentation fault (core dumped).

Please let me know how can I fix this error.

Steps to Reproduce

1. Clone the repo https://github.com/stereolabs/zed-examples
2. Go to folder zed-examples/object detection/custom detector/cpp/opencv_dnn_yolov4
3. mkdir build cd build cmake .. make cd ../
4. ./build/opencv_dnn_zed

Expected Result

model should run unintereptedly.

Actual Result

OpenCV Error: Assertion failed (0 <= roi.x && 0 <= roi.width && roi.x + roi.width <= m.cols && 0 <= roi.y && 0 <= roi.height && roi.y + roi.height <= m.rows) in Mat, file /builds/sl/ZEDKit/lib/src/sl_core/opencv/core/matrix.cpp, line 508 Segmentation fault (core dumped).

ZED Camera model

ZED2

Environment

OS: Ubuntu LTS 18.04, bionic
ZED SDK Version: ZED_SDK_Tegra_JP46_v3.6.5
CUDA Version: 10.2

Anything else?

No response

[br0tda]

Same problem with custom detector in SDK 3.7

[br0tda]

Same problem with custom detector in SDK 3.7

Fixed adding in cv::Rect get_rect(cv::Mat& img, float bbox[4]) in common.hpp these lines

int r_minus_l = r - l;
int b_minus_t = b - t;

    if(l <0 )
        l = 0;
    if(t < 0 )
        t = 0; 
    if(r_minus_l < 0 )
        r_minus_l = 0;
    if(b_minus_t < 0 )
        b_minus_t = 0;

    return cv::Rect(l, t, r_minus_l, b_minus_t); 

[ASingh245]

Ok, I will try thanks

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