These are the error code definition in OpenCV.
#define CV_StsOk 0 /* everithing is ok */
#define CV_StsBackTrace -1 /* pseudo error for back trace */
#define CV_StsError -2 /* unknown /unspecified error */
#define CV_StsInternal -3 /* internal error (bad state) */
#define CV_StsNoMem -4 /* Insufficient memory */
#define CV_StsBadArg -5 /* function arg/param is bad */
#define CV_StsBadFunc -6 /* unsupported function */
#define CV_StsNoConv -7 /* iter. didn't converge */
#define CV_StsAutoTrace -8 /* Tracing */
#define CV_HeaderIsNull -9 /* image header is NULL */
#define CV_BadImageSize -10 /* Image size is invalid */
#define CV_BadOffset -11 /* Offset is invalid */
#define CV_BadDataPtr -12 /**/
#define CV_BadStep -13 /**/
#define CV_BadModelOrChSeq -14 /**/
#define CV_BadNumChannels -15 /**/
#define CV_BadNumChannel1U -16 /**/
#define CV_BadDepth -17 /**/
#define CV_BadAlphaChannel -18 /**/
#define CV_BadOrder -19 /**/
#define CV_BadOrigin -20 /**/
#define CV_BadAlign -21 /**/
#define CV_BadCallBack -22 /**/
#define CV_BadTileSize -23 /**/
#define CV_BadCOI -24 /**/
#define CV_BadROISize -25 /**/
#define CV_MaskIsTiled -26 /**/
#define CV_StsNullPtr -27 /* Null pointer */
#define CV_StsVecLengthErr -28 /* Incorrect vector length */
#define CV_StsFilterStructContentErr -29 /* Incorr. filter structure content */
#define CV_StsKernelStructContentErr -30 /* Incorr. transform kernel content */
#define CV_StsFilterOffsetErr -31 /* Incorrect filter ofset value */
/*extra for CV */
#define CV_StsBadSize -201 /* bad CvSize */
#define CV_StsDivByZero -202 /* division by zero */
#define CV_StsInplaceNotSupported -203 /* inplace operation is not supported */
#define CV_StsObjectNotFound -204 /* request can't be completed */
#define CV_StsUnmatchedFormats -205 /* formats of input/output arrays differ */
#define CV_StsBadFlag -206 /* flag is wrong or not supported */
#define CV_StsBadPoint -207 /* bad CvPoint */
#define CV_StsBadMask -208 /* bad format of mask (neither 8uC1 nor 8sC1)*/
#define CV_StsUnmatchedSizes -209 /* ROI sizes of arrays differ */
#define CV_StsUnsupportedFormat -210 /* the format is not supported by the function*/
#define CV_StsOutOfRange -211 /* Some of parameters is out of range */
Copyright (c) 2002, Irene He.
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