Revision 9523 branches/piloto3d/libraries/libCq CMS for java.old/src/org/cresques/filter/enhancement/ContrastImageFilter.java
| ContrastImageFilter.java | ||
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import java.awt.Image; |
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import java.awt.image.BufferedImage; |
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import org.cresques.filter.RasterBuf; |
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import org.cresques.filter.RasterFilter; |
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import org.cresques.filter.RasterFilterStack; |
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import org.cresques.io.data.RasterBuf; |
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/** |
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* Filtro de contraste para im?genes raster. Toma como entrada la imagen |
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super.pre(); |
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} |
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public void process(int x, int y) {
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int px = ((BufferedImage) image).getRGB(x, y); |
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int px3[] = {(px & 0xff000000) >> 24,
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(px & 0x00ff0000) >> 16, |
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(px & 0x0000ff00) >> 8, |
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(px & 0x000000ff)}; |
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/** |
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* Algoritmo de contraste |
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* @param px3 valores ARGB |
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* @return valores ARGB con el algoritmo aplicado |
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*/ |
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private int[] calcContrast(int[] px3){
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for (int i = 1 ; i < 4 ; i++){
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//************ALGORITMO DE CONTRASTE************* |
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if(incrContraste >= 0){
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if (px3[i] < 127){
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diferencia = 127 - px3[i]; |
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result = px3[i] - (int)((diferencia * 5) * (incrContraste*0.1)/25);
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result = px3[i] - (int)((diferencia * 5) * (incrContraste*0.1) / 25);
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if(result < 0) result = 0; |
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} |
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if (px3[i] > 127){
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diferencia = px3[i] - 127; |
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result = px3[i] + (int)((diferencia * 5) * (incrContraste*0.1)/25);
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result = px3[i] + (int)((diferencia * 5) * (incrContraste * 0.1) / 25);
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if(result > 255) result = 255; |
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} |
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} |
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if(incrContraste < 0){
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}else{ //incrContraste < 0
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if(px3[i] < 127){
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diferencia = 127 - px3[i]; |
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result = px3[i] + ((int)(diferencia * 1) * (int)(-incrContraste * 0.1)/25);
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result = px3[i] + ((int)diferencia * (int)(-incrContraste * 0.1) / 25);
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if(result > 127) result = 127; |
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if(px3[i] == 0 || px3[i] == 1) |
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if(incrContraste > -255) |
| ... | ... | |
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} |
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if(px3[i] > 127){
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diferencia = px3[i] - 127; |
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result = px3[i] - ((int)(diferencia * 1) * (int)(-incrContraste * 0.1)/25);
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result = px3[i] - ((int)diferencia * (int)(-incrContraste * 0.1) / 25);
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if (result < 127) result = 127; |
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if(px3[i] == 255 || px3[i] == 254) |
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if(incrContraste > -255) |
| ... | ... | |
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} |
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px3[i] = result; |
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} |
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return px3; |
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} |
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public void process(int col, int line) {
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int px = ((BufferedImage) image).getRGB(col, line); |
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int px3[] = {(px & 0xff000000) >> 24,
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(px & 0x00ff0000) >> 16, |
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(px & 0x0000ff00) >> 8, |
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(px & 0x000000ff)}; |
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((BufferedImage) this.image).setRGB(x, y, ((px3[0] << 24) & 0xff000000) | |
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px3 = calcContrast(px3); |
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((BufferedImage) this.image).setRGB(col, line, ((px3[0] << 24) & 0xff000000) | |
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((px3[1] << 16) & 0x00ff0000) | |
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((px3[2] << 8) & 0x0000ff00) | |
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(px3[3] & 0x000000ff)); |
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} |
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public void processSuperSampling(int col, int line) {
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int px = ((BufferedImage) image).getRGB(col, line); |
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int px3[] = {(px & 0xff000000) >> 24,
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(px & 0x00ff0000) >> 16, |
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(px & 0x0000ff00) >> 8, |
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(px & 0x000000ff)}; |
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px3 = calcContrast(px3); |
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for(int j = col; j < image.getWidth(null) && j < (col + stepX[contX + 1]); j++) |
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for(int i = line; i < image.getHeight(null) && i < (line + stepY[contY + 1]); i++) |
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((BufferedImage) image).setRGB(j, i, ((px3[0] << 24) & 0xff000000) | |
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((px3[1] << 16) & 0x00ff0000) | |
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((px3[2] << 8) & 0x0000ff00) | |
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(px3[3] & 0x000000ff)); |
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} |
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public int getInRasterDataType() {
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return RasterBuf.TYPE_IMAGE; |
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} |
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