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### System Information
**Ubuntu 22.04**
OpenCV version: 4.5.4
Compiler & compiler version: Clang 15.0.7
**Ubuntu 24.04 LTS**
OpenCV version: 4.6.0
Compiler & compiler version: GCC 13.2
##…
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Hi,
I have created a custom `gvainference` element in C++ where I have preprocess_frame method taking care of color conversion, resizing, crop, etc. because model proc file uses different library t…
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Including Two Sets of System Info as this behavior is occurring on both.
|Required Info | |
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## error log | 日志或报错信息 | ログ
想把RobustVideoMatting（稳健视频抠图模型）用ncnn跑起来，经过一番折腾后成功转成静态维度的onnx，并且使用了onnxsim去除了胶水op，用onnxruntime可以顺利跑通转换后的模型；然后将其转换成ncnn，在转换时报错：
```shell
onnx2ncnn rvm_mobilenetv3_fp32-48…
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训练第一步
python train/data_preparation_face.py dir_to_data
结果报错如下
> I0000 00:00:1728819618.229953 1152263 gl_context.cc:357] GL version: 3.2 (OpenGL ES 3.2 NVIDIA 550.54.15), renderer: NVIDIA A1…
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Hey i got .mat file. I tried to open these in python. But i am not get video data. How to get video data from these mat file multi_train_data.mat"
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### System Information
OpenCV: 4.10.0
compiler: clang 17.0.6
Platform: almalinux9
cuda sdk: 12.3
### Detailed description
```
exception message: OpenCV(4.10.0) opencv-4.10.0/contrib/modules/cud…
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@viplix3 Hi!
Thanks again for your work.
I have been playing with GMC algos and there seeme to be a pb in
`HomographyMatrix OpenCV_VideoStab_GMC::apply(const cv::Mat &frame_raw, const std::vecto…
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Im trying to use the C::mat for as a source for a video grabber as I want to detect objects such as ArCuo. Can this be done on the pi using the native camera??
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### System Information
OpenCV version: 4.1.0
Operating System / Platform: Ubuntu 20.04
### Detailed description
None
### Steps to reproduce
```
cv::Mat y = cv::Mat(100, 100, CV_32FC(8), cv::S…