使用 NI VISION imaqDetectLines() 函数时出现一般保护错误
General Protection error when using NI VISION imaqDetectLines() function
我在 Labwindows\CVI
中使用 National Instruments Vision 模块
出于某种原因,当我使用函数 imaqDetectLines()
时,我得到 FATAL RUN-TIME ERROR: "Angle tracker.c", line 50, col 11, thread id 0x00002004: The program has caused a 'General Protection' fault at 0x6C5AD446.
这是我的代码:
#include "nivision.h"
#include <userint.h>
#include <cvirte.h>
int main (int argc, char *argv[])
{
int nLines;
ShapeDetectionOptions stShapeDetectionOption;
RangeFloat aAngleRanges[2]={{0,10.0},{10.0,20.0}};
CurveOptions stCurveOptions = {0};
LineMatch *aLm;
LineDescriptor lineDesc;
Image *imageHdl = NULL, *imageDestHdl = NULL;
char temp[1024] ="";
if (InitCVIRTE (0, argv, 0) == 0)
return -1; /* out of memory */
imageHdl = imaqCreateImage (0/*U8*/,1);
imageDestHdl = imaqCreateImage (0/*U8*/,1);
strcpy(temp,"C:\CVI2013\Projects\Angel Tracker\IMG\CC01.bmp");
imaqReadFile (imageHdl, temp, NULL, NULL);
imaqEdgeFilter (imageDestHdl, imageHdl, IMAQ_EDGE_SOBEL, NULL);
lineDesc.maxLength = 100;
lineDesc.minLength = 50;
stShapeDetectionOption.minMatchScore = 1;
stShapeDetectionOption.mode = 0;
stShapeDetectionOption.numAngleRanges = 1;
stShapeDetectionOption.angleRanges = aAngleRanges;
stShapeDetectionOption.scaleRange.minValue = 1;
stShapeDetectionOption.scaleRange.maxValue = 10;
stCurveOptions.extractionMode = 0;
stCurveOptions.threshold = 100;
stCurveOptions.filterSize = 1;
stCurveOptions.minLength = 100;
stCurveOptions.rowStepSize = 10;
stCurveOptions.columnStepSize = 10;
stCurveOptions.maxEndPointGap = 1000;
stCurveOptions.onlyClosed = TRUE;
stCurveOptions.subpixelAccuracy = TRUE;
aLm = imaqDetectLines(imageDestHdl, &lineDesc, &stCurveOptions
,&stShapeDetectionOption, NULL, &nLines);
return 0;
}
我实际上在做的是:
打开 BMP 文件
使用 SOBEL
使用 imaqEdgeFilter()
func 对其进行边缘填充
然后我想用 imaqDetectLines()
func
检测行
我发现了问题。
如果您查看函数调用:
aLm = imaqDetectLines(imageDestHdl, &lineDesc, &stCurveOptions
,&stShapeDetectionOption, NULL, &nLines);
对于 ROI 参数,我传递了 NULL,因为我是从功能面板帮助中得到的:
The region of interest applied to the image that specifies where circles can be detected. Set this parameter to NULL to search the entire image.
但是,显然这是一个已知错误并且会被修复,所以为了解决这个问题,只需执行以下操作:
ROI *roi;
imaqSetWindowROI (0, NULL);
roi = imaqGetWindowROI (0);
然后发送给函数:
aLm = imaqDetectLines(imageDestHdl, &lineDesc, &stCurveOptions
,&stShapeDetectionOption, roi, &nLines);
我在 Labwindows\CVI
中使用 National Instruments Vision 模块出于某种原因,当我使用函数 imaqDetectLines()
时,我得到 FATAL RUN-TIME ERROR: "Angle tracker.c", line 50, col 11, thread id 0x00002004: The program has caused a 'General Protection' fault at 0x6C5AD446.
这是我的代码:
#include "nivision.h"
#include <userint.h>
#include <cvirte.h>
int main (int argc, char *argv[])
{
int nLines;
ShapeDetectionOptions stShapeDetectionOption;
RangeFloat aAngleRanges[2]={{0,10.0},{10.0,20.0}};
CurveOptions stCurveOptions = {0};
LineMatch *aLm;
LineDescriptor lineDesc;
Image *imageHdl = NULL, *imageDestHdl = NULL;
char temp[1024] ="";
if (InitCVIRTE (0, argv, 0) == 0)
return -1; /* out of memory */
imageHdl = imaqCreateImage (0/*U8*/,1);
imageDestHdl = imaqCreateImage (0/*U8*/,1);
strcpy(temp,"C:\CVI2013\Projects\Angel Tracker\IMG\CC01.bmp");
imaqReadFile (imageHdl, temp, NULL, NULL);
imaqEdgeFilter (imageDestHdl, imageHdl, IMAQ_EDGE_SOBEL, NULL);
lineDesc.maxLength = 100;
lineDesc.minLength = 50;
stShapeDetectionOption.minMatchScore = 1;
stShapeDetectionOption.mode = 0;
stShapeDetectionOption.numAngleRanges = 1;
stShapeDetectionOption.angleRanges = aAngleRanges;
stShapeDetectionOption.scaleRange.minValue = 1;
stShapeDetectionOption.scaleRange.maxValue = 10;
stCurveOptions.extractionMode = 0;
stCurveOptions.threshold = 100;
stCurveOptions.filterSize = 1;
stCurveOptions.minLength = 100;
stCurveOptions.rowStepSize = 10;
stCurveOptions.columnStepSize = 10;
stCurveOptions.maxEndPointGap = 1000;
stCurveOptions.onlyClosed = TRUE;
stCurveOptions.subpixelAccuracy = TRUE;
aLm = imaqDetectLines(imageDestHdl, &lineDesc, &stCurveOptions
,&stShapeDetectionOption, NULL, &nLines);
return 0;
}
我实际上在做的是:
打开 BMP 文件
使用 SOBEL
使用 然后我想用
imaqDetectLines()
func 检测行
imaqEdgeFilter()
func 对其进行边缘填充
我发现了问题。
如果您查看函数调用:
aLm = imaqDetectLines(imageDestHdl, &lineDesc, &stCurveOptions
,&stShapeDetectionOption, NULL, &nLines);
对于 ROI 参数,我传递了 NULL,因为我是从功能面板帮助中得到的:
The region of interest applied to the image that specifies where circles can be detected. Set this parameter to NULL to search the entire image.
但是,显然这是一个已知错误并且会被修复,所以为了解决这个问题,只需执行以下操作:
ROI *roi;
imaqSetWindowROI (0, NULL);
roi = imaqGetWindowROI (0);
然后发送给函数:
aLm = imaqDetectLines(imageDestHdl, &lineDesc, &stCurveOptions
,&stShapeDetectionOption, roi, &nLines);