gpuimage

I am using a GPUImageView inside my iOS application. I want that the GPUImageView have a transparent background. I tried setBackground:[UIColor clearColor] It does not work. Any workarounds? Regards I found you need to set both of these to get a transparent background. Neither works alone. strengthPreviewImageView.backgroundColor = [UIColor clearColor]; [strengthPreviewImageView setBackgroundColorRed:0 green:0 blue:0 alpha:0]; ...Did you try the method from the GPUImageView header? - (void)setBackgroundColorRed:(GLfloat)redComponent green:(GLfloat)greenComponent blue:(GLfloat)blueComponent

I am trying to implement brightness,contrast and exposure filters in a single view same as you see in iPhoto app. I have tried to put up group filter for doing the same. But it shows up a white screen instead of modified picture. Here is the code I applied. GPUImageFilterGroup *groupFilter = [[GPUImageFilterGroup alloc]init]; GPUImageBrightnessFilter *brightnessFilter = [[GPUImageBrightnessFilter alloc]init]; [brightnessFilter setBrightness:brightnessValue]; GPUImageContrastFilter *contrastFilter = [[GPUImageContrastFilter alloc]init]; [contrastFilter setContrast:contrastValue];

I was using the GPUImage gaussian blur filter to blur a still image. I want to tie the blur size to an UI element and as the element is changed by the user I blur the picture. The way I am doing it right now is to change the blurSize when there has been a significant (> 0.25) change, reapply the filter and animate the new image into the imageView. Is there a more efficient way for me to be doing this? On the iPhone 5, while performance is not laggy, it is not super smooth either (but perhaps that is because this operation is simply too expensive to be super smooth). interesting question. Your

Using the amazing GPU image framework, I'm trying to create a custom filter using a custom fragment shader that passed some color vectors as uniforms, elaborate each fragment substituting a choosen color with one in the uniform. I made that using Quartz and it works, but since I'm moving my first step in OpenGL world using this framework, I'd like to give a try to the GPU processing. The fragment shader I made seems to work fine, but there is a problem in the output. I post just a sample for debugging porpoise varying highp vec2 textureCoordinate; uniform sampler2D inputImageTexture; bool

I have a problem with understanding GPUImage. Specifically, I can't figure out how to use GPUImageLookupFilter. I have several examples of usage in GPUImageAmatorkaFilter for example. But LookupFilter used there within GPUImageFilterGroup which I didn't understood yet either. I wonder whether I can use LookupFilter alone. I've tried this: GPUImageLookupFilter *lookup = [[GPUImageLookupFilter alloc] init]; UIImage *image = [UIImage imageNamed:@"amatorka.png"]; GPUImagePicture *lookupImageSource = [[GPUImagePicture alloc] initWithImage:image]; [lookupImageSource addTarget: lookup

I want to record video by camera in my Android device. I need to add overlay image over recorded movie. In iOS I would use GPUImage . In Android I found Android GPUImage . I tried to use it but I didn't found any way to add any filter while video recording. In provided example I could add filters only for taking photos. Is there any ways to record video with filters with Android GPUImage ? Is there any other ways to add images overlay over recording video in realtime? If not, is there any ways to add images overlay over recorded video in postprocessing? You can add an overlay image on video