个别png图片报“识别异常”的错，转成jpg又可以了。啥原因，有更好的解决办法吗？ about darknet-ocr HOT 2 OPEN

日志打出来了。请大家帮看看什么原因

2020-05-26T02:46:53.627844347Z 132.228.75.51:58994 - - [26/May/2020 02:46:53] "HTTP/1.1 GET /text" - 200 OK
2020-05-26T02:47:22.230907913Z Traceback (most recent call last):
2020-05-26T02:47:22.230945799Z File "/usr/local/lib/python3.6/dist-packages/web/application.py", line 257, in process
2020-05-26T02:47:22.230969132Z return self.handle()
2020-05-26T02:47:22.230974368Z File "/usr/local/lib/python3.6/dist-packages/web/application.py", line 248, in handle
2020-05-26T02:47:22.230978681Z return self._delegate(fn, self.fvars, args)
2020-05-26T02:47:22.230982383Z File "/usr/local/lib/python3.6/dist-packages/web/application.py", line 488, in _delegate
2020-05-26T02:47:22.230986142Z return handle_class(cls)
2020-05-26T02:47:22.230989660Z File "/usr/local/lib/python3.6/dist-packages/web/application.py", line 466, in handle_class
2020-05-26T02:47:22.230993346Z return tocall(*args)
2020-05-26T02:47:22.230996880Z File "app.py", line 73, in POST
2020-05-26T02:47:22.231000618Z res = job(uuid,url,imgString,iscut,isclass,billModel,ip)
2020-05-26T02:47:22.231004128Z File "app.py", line 32, in job
2020-05-26T02:47:22.231007730Z data = text_ocr(image,scale,maxScale,TEXT_LINE_SCORE)
2020-05-26T02:47:22.231011536Z File "/root/darknet-ocr/dnn/main.py", line 68, in text_ocr
2020-05-26T02:47:22.231015294Z text = ocrModel(tmpImg)
2020-05-26T02:47:22.231102694Z File "/root/darknet-ocr/dnn/ocr.py", line 39, in predict
2020-05-26T02:47:22.231166654Z return predict_cpu(image)
2020-05-26T02:47:22.231183885Z File "/root/darknet-ocr/dnn/ocr.py", line 62, in predict_cpu
2020-05-26T02:47:22.231198789Z y_pred = ocrNet.forward()
2020-05-26T02:47:22.231211739Z cv2.error: OpenCV(4.0.1) /root/opencv-for-darknet/opencv-4.0.1/modules/dnn/src/dnn.cpp:778: error: (-215:Assertion failed) mapIt != reuseMap.end() in function 'numReferences'
2020-05-26T02:47:22.231223358Z
2020-05-26T02:47:22.231236125Z
2020-05-26T02:47:22.231246831Z 132.228.75.51:58994 - - [26/May/2020 02:47:22] "HTTP/1.1 POST /text" - 500 Internal Server Error

from darknet-ocr.

很简单，你的图片格式是png的，但文件名写着xxx.jpg， 格式是按文件名判断的。。。
如果你是linux或用git bash ，可以用file xxxx来看文件真正的格式，而不是看文件名

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