java图像处理源码

/* *************************************************************************** * * Read and write arrays of various data types. * *************************************************************************** */ import java.io.*; public class ArrayIO { public static void readByteArray(String fname, int array[][], int nrows, int ncols) { try { File file = new File(fname); FileInputStream fin= new FileInputStream(file); for (int i=0; i<nrows; i++) for (int j=0; j<ncols; j++) array[i][j] = (int)(0xFF & fin.read()); // Unsigned char to integer fin.close(); } catch (Exception e) { System.out.println(e.getMessage()); System.exit(0); } } public static void writeByteArray(String fname, int array[][], int nrows, int ncols) { try { File file = new File(fname); FileOutputStream fout = new FileOutputStream(file); for (int i=0; i<nrows; i++) for (int j=0; j<ncols; j++) fout.write((byte)(0xFF & array[i][j])); // Integer to unsigned char fout.close(); } catch (Exception e) { System.out.println(e.getMessage()); System.exit(0); } } public static void readIntArray(String fname, int array[][], int nrows, int ncols) { try { File file = new File(fname); DataInputStream fin = new DataInputStream(new FileInputStream(file)); for (int i=0; i<nrows; i++) for (int j=0; j<ncols; j++) array[i][j] = fin.readInt(); fin.close(); } catch (Exception e) { System.out.println(e.getMessage()); System.exit(0); } } public static void writeIntArray(String fname, int array[][], int nrows, int ncols) { try { File file = new File(fname); DataOutputStream fout = new DataOutputStream(new FileOutputStream(file)); for (int i=0; i<nrows; i++) for (int j=0; j<ncols; j++) fout.writeInt(array[i][j]); fout.close(); } catch (Exception e) { System.out.println(e.getMessage()); System.exit(0); } } public static void readFloatArray(String fname, float array[][], int nrows, int ncols) { try { File file = new File(fname); DataInputStream fin = new DataInputStream(new FileInputStream(file)); for (int i=0; i<nrows; i++) for (int j=0; j<ncols; j++) array[i][j] = fin.readFloat(); fin.close(); } catch (Exception e) { System.out.println(e.getMessage()); System.exit(0); } } public static void writeFloatArray(String fname, float array[][], int nrows, int ncols) { try { File file = new File(fname); DataOutputStream fout = new DataOutputStream(new FileOutputStream(file)); for (int i=0; i<nrows; i++) for (int j=0; j<ncols; j++) fout.writeFloat(array[i][j]); fout.close(); } catch (Exception e) { System.out.println(e.getMessage()); System.exit(0); } } public static void readDoubleArray(String fname, double array[][], int nrows, int ncols) { try { File file = new File(fname); DataInputStream fin = new DataInputStream(new FileInputStream(file)); for (int i=0; i<nrows; i++) for (int j=0; j<ncols; j++) array[i][j] = fin.readDouble(); fin.close(); } catch (Exception e) { System.out.println(e.getMessage()); System.exit(0); } } public static void writeDoubleArray(String fname, double array[][], int nrows, int ncols) { try { File file = new File(fname); DataOutputStream fout = new DataOutputStream(new FileOutputStream(file)); for (int i=0; i<nrows; i++) for (int j=0; j<ncols; j++) fout.writeDouble(array[i][j]); fout.close(); } catch (Exception e) { System.out.println(e.getMessage()); System.exit(0); } } } // end class ArrayIO