Android GPUImage源码分析（一）简介

Android GPUImage源码分析（一） 简介

cats-oss/android-gpuimage

Android filters based on OpenGL (idea from GPUImage for iOS)

源码链接

GPUImage广泛用于图片处理摄像头摄影视频处理，比如添加滤镜、动态贴纸等功能

要求：

• Android 2.2 or higher (OpenGL ES 2.0)

简单实用

repositories {
    jcenter()
}

dependencies {
    implementation 'jp.co.cyberagent.android:gpuimage:2.x.x'
}

使用中带GPUImageView预览时

@Override
public void onCreate(final Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity);

    Uri imageUri = ...;
    gpuImage = new GPUImage(this);
    gpuImage.setGLSurfaceView((GLSurfaceView) findViewById(R.id.surfaceView));
    gpuImage.setImage(imageUri); // this loads image on the current thread, should be run in a thread
    gpuImage.setFilter(new GPUImageSepiaFilter());

    // Later when image should be saved saved:
    gpuImage.saveToPictures("GPUImage", "ImageWithFilter.jpg", null);
}

使用中不带预览时

public void onCreate(final Bundle savedInstanceState) {
    public void onCreate(final Bundle savedInstanceState) {
    Uri imageUri = ...;
    gpuImage = new GPUImage(context);
    gpuImage.setFilter(new GPUImageSobelEdgeDetection());
    gpuImage.setImage(imageUri);
    gpuImage.saveToPictures("GPUImage", "ImageWithFilter.jpg", null);
}

常见滤镜效果

Support status of GPUImage for iOS shaders

•  Saturation
•  Contrast
•  Brightness
•  Levels
•  Exposure
•  RGB
•  RGB Diation
•  Hue
•  White Balance
•  Monochrome
•  False Color
•  Sharpen
•  Unsharp Mask
•  Transform Operation
•  Crop
•  Gamma
•  Highlights and Shadows
•  Haze
•  Sepia Tone
•  Amatorka
•  Miss Etikate
•  Soft Elegance
•  Color Inversion
•  Solarize
•  Vibrance
•  Highlight and Shadow Tint
•  Luminance
•  Luminance Threshold
•  Average Color
•  Average Luminance
•  Average Luminance Threshold
•  Adaptive Threshold
•  Polar Pixellate
•  Pixellate
•  Polka Dot
•  Halftone
•  Crosshatch
•  Sobel Edge Detection
•  Prewitt Edge Detection
•  Canny Edge Detection
•  Threshold Sobel EdgeDetection
•  Harris Corner Detector
•  Noble Corner Detector
•  Shi Tomasi Feature Detector
•  Colour FAST Feature Detector
•  Low Pass Filter
•  High Pass Filter
•  Sketch Filter
•  Threshold Sketch Filter
•  Toon Filter
•  SmoothToon Filter
•  Tilt Shift
•  CGA Colorspace Filter
•  Posterize
•  Convolution 3x3
•  Emboss Filter
•  Laplacian
•  Chroma Keying
•  Kuwahara Filter
•  Kuwahara Radius3 Filter
•  Vignette
•  Gaussian Blur
•  Box Blur
•  Bilateral Blur
•  Motion Blur
•  Zoom Blur
•  iOS Blur
•  Median Filter
•  Swirl Distortion
•  Bulge Distortion
•  Pinch Distortion
•  Sphere Refraction
•  Glass Sphere Refraction
•  Stretch Distortion
•  Dilation
•  Erosion
•  Opening Filter
•  Closing Filter
•  Local Binary Pattern
•  Color Local Binary Pattern
•  Dissolve Blend
•  Chroma Key Blend
•  Add Blend
•  Divide Blend
•  Multiply Blend
•  Overlay Blend
•  Lighten Blend
•  Darken Blend
•  Color Burn Blend
•  Color Dodge Blend
•  Linear Burn Blend
•  Screen Blend
•  Difference Blend
•  Subtract Blend
•  Exclusion Blend
•  HardLight Blend
•  SoftLight Blend
•  Color Blend
•  Hue Blend
•  Saturation Blend
•  Luminosity Blend
•  Normal Blend
•  Source Over Blend
•  Alpha Blend
•  Non Maximum Suppression
•  Thresholded Non Maximum Suppression
•  Directional Non Maximum Suppression
•  Opacity
•  Weak Pixel Inclusion Filter
•  Color Matrix
•  Directional Sobel Edge Detection
•  Lookup
•  Tone Curve (*.acv files)

Others

•  Texture 3x3
•  Gray Scale