geopackage-sdk/src/main/java/mil/nga/geopackage/extension/coverage/CoverageDataPng.java
public byte[] drawTileData(int[][] unsignedPixelValues) {
        CoverageDataPngImage image = drawTile(unsignedPixelValues);
        byte[] bytes = image.getImageBytes();
        return bytes;
    }
public byte[] drawTileData(int[][] unsignedPixelValues) {
        CoverageDataPngImage image = drawTile(unsignedPixelValues);
        byte[] bytes = image.getImageBytes();
        return bytes;
    }
Draw a coverage data image tile and format as PNG bytes from the double
array of unsigned 16 bit integer pixel values formatted as
int[row][width]

@param unsignedPixelValues unsigned 16 bit integer pixel values as [row][width]
@return coverage data image tile bytes