getting memory warning

[kalpesh22m]

I am using opencv framework for flood fill . It works perfectly but after some time getting memory warning ..

I am testing my app for leakages. I notice that my app grows by 3 to 4 mb each time I run my opencv functions.

Code For IPL image to UIImage:

• (UIImage )UIImageFromIplImage:(IplImage)image {

CGColorSpaceRef colorSpace;

if (image->nChannels == 1) {
colorSpace = CGColorSpaceCreateDeviceGray();
}
else {
colorSpace = CGColorSpaceCreateDeviceRGB();
cvCvtColor(image, image, CV_BGR2RGB);
}

NSData *data = [NSData dataWithBytes:image->imageData length:image->imageSize];
CGDataProviderRef provider = CGDataProviderCreateWithCFData((CFDataRef)data);
CGImageRef imageRef = CGImageCreate(image->width,
image->height,
image->depth,
image->depth * image->nChannels,
image->widthStep,
colorSpace,
kCGImageAlphaNone|kCGBitmapByteOrderDefault,
provider,
NULL,
false,
kCGRenderingIntentDefault
);
UIImage *ret = [UIImage imageWithCGImage:imageRef];

CGImageRelease(imageRef);
CGDataProviderRelease(provider);
CGColorSpaceRelease(colorSpace);

data=nil;
return ret;
}

Code For UIImage to IPL image

• (IplImage_)IplImageFromUIImage:(UIImage_)image {

CGImageRef imageRef = image.CGImage;
CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
IplImage *iplimage = cvCreateImage(cvSize(image.size.width,image.size.height), IPL_DEPTH_8U, 4 );

CGContextRef contextRef = CGBitmapContextCreate(
iplimage->imageData,
iplimage->width,
iplimage->height,
iplimage->depth,
iplimage->widthStep,
colorSpace,
kCGImageAlphaPremultipliedLast|kCGBitmapByteOrderDefault
);

CGContextDrawImage(contextRef,CGRectMake(0, 0, image.size.width, image.size.height),imageRef);

CGContextRelease(contextRef);
CGColorSpaceRelease(colorSpace);

retImage = cvCreateImage(cvGetSize(iplimage), IPL_DEPTH_8U, 3);
cvCvtColor(iplimage, retImage, CV_RGBA2BGR);
cvReleaseImage(&iplimage);
iplimage =nil;
return retImage;
}

[BloodAxe]

Thanks for the report. In fact this tutorial is very old and it needs refactoring to utilize ARC and OpenCV to UIImage conversion that appeared in OpenCV 2.4.9.

[BloodAxe]

ARC has been enabled for OBJ-C types and with a new OpenCV version this issue should be fixed by now.