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typedef struct Contours
{int height;int width;int stateFlag;
} contour;

contour* contourLengthMark( contour* _rContours, const int _MinLength, const int _MaxLength )
{int i = 0, j = 0;//轮廓点遍历计数int point_Count_Now = 0;//当前轮廓点总数int length_Count = 0;//轮廓周长计数int length_Temp = 0;//临时长度变量contour* contour_New_Ptr = NULL;//返回的新轮廓空间点首地址//对于轮廓长度不符合条件的，轮廓空间点标志位置“3”point_Count_Now = _rContours[0].stateFlag;//通过第一个点的状态位记录轮廓空间点数_rContours[0].stateFlag = 1;//将第一个点的状态位还原为“1”while ( _rContours[i].height > 0 ){length_Count = 0;if ( 0 != _rContours[ i + length_Count ].stateFlag ){length_Count ++;while ( _rContours[ i + length_Count ].stateFlag == 0 ){length_Count ++;}length_Temp = length_Count + 1;if ( length_Temp < _MinLength || length_Temp > _MaxLength ){while ( length_Count ){_rContours[ i + length_Count ].stateFlag = 3;length_Count --;}_rContours[i].stateFlag = 3;point_Count_Now -= length_Temp;}}i = i + length_Temp;}contour_New_Ptr = ( contour *)malloc( point_Count_Now * sizeof(contour) );//新轮廓空间i = 0; j = 0;while ( _rContours[i].height > 0 ){if ( 3 != _rContours[i].stateFlag ){contour_New_Ptr[j].height = _rContours[i].height;contour_New_Ptr[j].width = _rContours[i].width;contour_New_Ptr[j].stateFlag = _rContours[i].stateFlag;j ++;}i ++;}contour_New_Ptr[0].stateFlag = point_Count_Now;//将现轮廓点数量保存在第一个轮廓空间点的状态位free(_rContours);return contour_New_Ptr;
}