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没有yolov8.cpp #5487
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I just submitted a pull request for yolov8 example #5506 |
Hi, I tested the yolov8.cpp example in your PR, but the results are unreasonable. Specifically, I got yolov8n.bin and yolov8n.param following your guide in yolov8.cpp, and your yolov8n example returns many detections with same confidence of 0.5. The result: |
我知道这个问题,这个原因不是因为我这边的原因,而是您导出的yolov8.ncnn.* 模型是仅固定支持[1,3,640,640]的模型,并不支持动态shape输入造成的。 这个错误的模型会导致输入进去的数据为了保持图像原比例缩放,并不符合模型要求的[1,3,640,640],实际上有可能是[1,3,640,540],所以模型内部会错位读取图像,对结果造成严重偏差。 只是要尝试效果的话,您可以直接把输入的图片用画图工具或者cv::resize() 修改成640x640的尺寸。 pnnx本身是支持动态shape输入的,您可以去参考 https://github.com/pnnx/pnnx?tab=readme-ov-file#------detailed-options 导出正确的支持动态shape输入的模型,期待您的好消息~🤣 |
Well, I find out that the problem originates from a bug in your yolov8.cpp
should be modified as:
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ncnn量化后的yolov8模型模型文件,example目录下没有推理代码yolov8.cpp
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