op_64 调用OcrEx 出现如下问题， 没有获取到字符串

[llaldjjen]

Error in pixCreateHeader: width must be > 0
Error in pixCreateNoInit: pixd not made
Error in pixCreate: pixd not made
Error in pixGetData: pix not defined
Error in pixGetWpl: pix not defined
Error in pixGetDimensions: pix not defined
Error in pixCopy: pixs not defined
Error in pixGetDepth: pix not defined
Error in pixGetWpl: pix not defined
Error in pixGetYRes: pix not defined
Please call SetImage before attempting recognition.

[llaldjjen]

凡事在Ocr相关代码参数里加入颜色字符串都会出现这个异常,传入空字符则没有问题