我正在尝试为OCR准备图像,我使用GPUImage来做它,代码工作正常,直到我裁剪图像!裁剪后我得到了糟糕的结果......裁剪面积:https://www.dropbox.com/s/e3mlp25sl6m55yk/IMG_0709.PNG错误的结果=(https://www.dropbox.com/s/wtxw7li6paltx21/IMG_0710.PNG+(UIImage*)doBinarize:(UIImage*)sourceImage{//firstoff,trytograyscaletheimageusingiOScoreImageroutineUIImage*grayS