com.google.zxing.common

Class DefaultGridSampler


  • public final class DefaultGridSampler
extends GridSampler

    • Constructor Detail

      • DefaultGridSampler

        public DefaultGridSampler()

    • Method Detail

      • sampleGrid

        public BitMatrix sampleGrid(BitMatrix image,
                            int dimensionX,
                            int dimensionY,
                            float p1ToX,
                            float p1ToY,
                            float p2ToX,
                            float p2ToY,
                            float p3ToX,
                            float p3ToY,
                            float p4ToX,
                            float p4ToY,
                            float p1FromX,
                            float p1FromY,
                            float p2FromX,
                            float p2FromY,
                            float p3FromX,
                            float p3FromY,
                            float p4FromX,
                            float p4FromY)
                     throws NotFoundException
        Description copied from class: GridSampler
        Samples an image for a rectangular matrix of bits of the given dimension. The sampling transformation is determined by the coordinates of 4 points, in the original and transformed image space.
        Specified by:
        sampleGrid in class  GridSampler
        Parameters:
        image - image to sample
        dimensionX - width of BitMatrix to sample from image
        dimensionY - height of BitMatrix to sample from image
        p1ToX - point 1 preimage X
        p1ToY - point 1 preimage Y
        p2ToX - point 2 preimage X
        p2ToY - point 2 preimage Y
        p3ToX - point 3 preimage X
        p3ToY - point 3 preimage Y
        p4ToX - point 4 preimage X
        p4ToY - point 4 preimage Y
        p1FromX - point 1 image X
        p1FromY - point 1 image Y
        p2FromX - point 2 image X
        p2FromY - point 2 image Y
        p3FromX - point 3 image X
        p3FromY - point 3 image Y
        p4FromX - point 4 image X
        p4FromY - point 4 image Y
        Returns:
        BitMatrix representing a grid of points sampled from the image within a region defined by the "from" parameters
        Throws:
        NotFoundException - if image can't be sampled, for example, if the transformation defined by the given points is invalid or results in sampling outside the image boundaries