Re: Cropping
Re: Cropping
- Subject: Re: Cropping
- From: Terry Heaford <email@hidden>
- Date: Wed, 24 May 2006 21:57:46 +0100
Robert,
Thanks for your advice.
I have re-coded using CICrop successfully with the outcome it seems
the same as my first effort.
Can you confirm if the quality of the image cropped changes as a
result of the copying using either method.
Best regards
Terry
On 24 May 2006, at 20:22, Robert Walker wrote:
image = [[CIImage alloc]initWithBitmapImageRep:myImageRep];
If you are already using Core Image why not use it's cropping
function:
...
...
// Crop the output image to be within the rect of the thumbnail.
crop = [CIFilter filterWithName: @"CICrop"
keysAndValues: @"inputImage", [transition valueForKey:
@"outputImage"], @"inputRectangle",
[CIVector vectorWithX: 0 Y: 0 Z: bounds.size.width W:
bounds.size.height], nil];
...
...
On May 24, 2006, at 3:13 PM, Terry Heaford wrote:
I have been trying to implement a cropping routine for an image.
I have got this far, it seems to work but I am unsure if the first
two lines are suitable for getting the cropped part of the image.
Can someone please confirm or point me in the right direction.
NSBitmapImageRep *myImageRep = [self
bitmapImageRepForCachingDisplayInRect:selectedRect];
[self cacheDisplayInRect:selectedRect toBitmapImageRep:myImageRep];
[image release];
image = [[CIImage alloc]initWithBitmapImageRep:myImageRep];
[image retain];
[self adjustFrame];
selectedRect = NSZeroRect;
Thanks
--Terry
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Robert Walker
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| References: | |
| | >Cropping (From: Terry Heaford <email@hidden>) |
| | >Re: Cropping (From: Robert Walker <email@hidden>) |