iphone - CIPixellate output image size is different -


i using cipixellate pixelating image in ios6. results in bigger image. how can keep original size?

    nsdata *imagedata   =  [nsdata datawithdata:uiimagejpegrepresentation(capturedimageview.image, 1.0)];//[nsdata datawithdata:uiimagepngrepresentation(capturedimageview.image)];     beginimage = [ciimage imagewithdata:imagedata];     context = [cicontext contextwithoptions:[nsdictionary dictionarywithobject:[nsnumber numberwithbool:yes] forkey:kcicontextusesoftwarerenderer]];         filter = [cifilter filterwithname:@"cipixellate" keysandvalues:kciinputimagekey, beginimage, @"inputscale", [nsnumber numberwithfloat:14.0], nil];        ciimage *outputimage = [filter outputimage];         cgimageref cgimg = [context createcgimage:outputimage fromrect:cgrectmake(0, 0, 320, 480)];        uiimage *newimg = [uiimage imagewithcgimage:cgimg];

// new image bigger in size , part cropped :-/

uiimageorientation originalorientation = origim.imageorientation; ciimage *result = [ciimage imagewithcgimage:origim.cgimage]; cicontext *context = [cicontext contextwithoptions:nil];  cifilter *pixel = [cifilter filterwithname:@"cipixellate"]; [pixel setdefaults]; [pixel setvalue:result forkey:@"inputimage"]; [pixel setvalue:[civector vectorwithx:100.0 y:100.0] forkey:kciinputcenterkey]; [pixel setvalue:[nsnumber numberwithfloat:yeslider.value] forkey:kciinputscalekey]; result = [pixel valueforkey:kcioutputimagekey];  cgimageref imgref = [context createcgimage:result fromrect:result.extent]; uiimage *newimage = [uiimage imagewithcgimage:imgref];

in code you’re creating cgimage rect. aren't using .extent. causes image’s original dimensions lost.


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