Cross Reference: /frameworks/base/media/mca/filterpacks/java/android/filterpacks/videoproc/BackDropperFilter.java

Lines Matching refs:background
65     // Dimensions of foreground / background mask. Optimum value should take into account only
72     // Levels at which to compute foreground / background decision. Think of them as are deltas
116     // Whether to mirror the background or not. For ex, the Camera app
122     // coordinates, if we were to mirror the background
132     // Maximum distance (in standard deviations) for considering a pixel as background
140     // Width of foreground / background mask.
142     // Height of foreground / background mask.
154     // Mask value to start blending away from background
170     // Default rate at which to learn bg model from new background pixels
174     // Default rate at which to verify whether background is stable
176     // Default rate at which to verify whether background is stable
179     // Default 3x3 matrix, column major, for fitting background 1:1
206                                                  "background"};
238             // Variance distance in luminance between current pixel and background model
243             // Sum of variance distances in chroma between current pixel and background
256     //   current background model, in both luminance and in chroma (yuv space).  Distance is
257     //   measured in variances from the mean background value. For chroma, the distance is the sum
282     // Foreground/background mask decision shader. Decides whether a frame is in the foreground or
283     //   the background using a hierarchical threshold on the distance. Binary foreground/background
296             // Decide whether pixel is foreground or background based on Y and UV
321     // To match the white balance of foreground and background, the average of R, G, B channel of
325     //   tex_sampler_1: Mip-map for background (playback) video frame.
347     //   foreground and background
351     //   tex_sampler_2: Foreground/background mask.
396     //   foreground or background.
400     //   tex_sampler_2: Foreground/background mask.
422     //   classified as foreground or background.
427     //   tex_sampler_3: Foreground/background mask.
453     // Background verification shader. Skews the current background verification mask towards the
615         // Create initial background model values
626         // Get frames to store background model in
702         Frame background = pullInput("background");
721         updateBgScaling(video, background, mBackgroundFitModeChanged);
727         copyShaderProgram.process(background, mBgInput);
771                 // In the learning verification stage, compute background masks and a weighted average
805             Frame[] subtractInputs = { video, background, mMask, mAutoWB };
811         // Compute mean and variance of the background
885     // Relearn background model
928     private void updateBgScaling(Frame video, Frame background, boolean fitModeChanged) {
930         float backgroundAspect = (float)background.getFormat().getWidth() / background.getFormat().getHeight();
941                         // Foreground is wider than background, scale down
942                         // background in X
946                         // Foreground is taller than background, scale down
947                         // background in Y
954                         // Foreground is wider than background, crop
955                         // background in Y
959                         // Foreground is taller than background, crop
960                         // background in X
974                 if (mLogVerbose) Log.v(TAG, "Mirroring the background!");