ciimage

So, I have a CIImage that I'm attempting to draw in an NSView 's -drawRect method. This is the line of code that I call to draw the image: [outputCoreImage drawInRect: [self bounds] fromRect: originalBounds operation: NSCompositeSourceOver fraction: 1]; outputCoreImage , originalBounds , and [self bounds] are all non- nil , and indeed are their respective expected values. On Lion (OS X 10.7), this worked fine, however on Mountain Lion (OS X 10.8) I receive an EXC_BAD_ACCESS on this line. If I walk up the stack, I find that the internal function call that breaks is on CGLGetPixelFormat . frame

Trying to get a simple Proof of concept going with Apple's face detection API. I've looked at a couple of other examples including Apple's SquareCam, and this one https://github.com/jeroentrappers/FaceDetectionPOC based on these, it seems like I am following the correct pattern to get the APIs going, but I am stuck. No matter what I do, the CIDetector for my face detector is always nil!!! I would seriously appreciate any help, clues - hints - suggestions! -(void)initCamera{ session = [[AVCaptureSession alloc]init]; AVCaptureDevice *device; /* if([self frontCameraAvailable]){ device = [self

I'm applying a CIFilter to a portrait image. For some reason, it gets rotated 90 clockwise. How can I fix this? My code is below var imgOrientation = oImage.imageOrientation var imgScale = oImage.scale let originalImage = CIImage(image: oImage) var filter = CIFilter(name: "CIPhotoEffect"+arr[sender.tag-1000]) filter.setDefaults() filter.setValue(originalImage, forKey: kCIInputImageKey) var outputImage = filter.outputImage var newImage = UIImage(CIImage:outputImage, scale:imgScale, orientation:imgOrientation) cameraStill.image = newImage I'm going to guess that the problem is this line: var

extremely new to SceneKit, so just looking for help here: I have an SCNSphere with a camera at the center of it I create an SCNMaterial, doubleSided, and assign it to the sphere Since the camera is at the center, the image looks flipped vertically, which when having text inside totally messes things up. So how can i flip the material, or the image (although later it will be frames from a video), any other suggestion is welcome. This solution, btw, is failing on me, normalImage is applied as a material (but the image is flipped when looking from inside the sphere), but assigning flippedImage

I am looking to analyze the most dominant color in a UIImage on iOS (color present in the most pixels) and I stumbled upon Core Image's filter based API, particularly CIAreaHistogram. It seems like this filter could probably help me but I am struggling to understand the API. Firstly it says the output of the filter is a one-dimensional image which is the length of your input-bins and one pixel in height. How do I read this data? I basically want to figure out the color-value with the highest frequency so I am expecting the data to contain some kind of frequency count for each color, its not