Research Article
Efficient Parallel Implementation of Active Appearance Model Fitting Algorithm on GPU
Algorithm 4
GPU-based method for calculating
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| // : the ID of pixel. | | // : the number of threads in grid. | | // np: the number of pixels. | | // VID: gets the IDs of three vertices of the triangle | | // that the given pixel belongs to. | | // S: the shape vector. | | // α, , : the transformation parameters. | | // BI: conducts a bilinear interpolation. | | // img: the intensity matrix of the image. | | () i blockId * gridDim + threadId; | | () N gridDim * blockDim; | | () while i < np | | () (v1, v2, v3) VID(i). | | () ; | | () ; | | () ; | | () ; | | () end while |
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