如何在imagej上绘制一个16x16的矩形表格？

Question

我想要做的是创建一个新的图像与16×16矩形的颜色填充像查找表的颜色。

我是Java和ImageJ的新手，这是我现在的进步。它只显示每个像素1个颜色。我想修改它以显示每种颜色5x5像素。我怎样才能做到这一点。

import ij.*; 
import ij.process.*; 
import ij.gui.*; 
import java.util.*; 
import java.awt.*; 
import ij.plugin.filter.*; 
import ij.process.*; 
import java.lang.Math.*; 
import java.awt.image.IndexColorModel; 


public class colortable_plugin implements PlugInFilter { 

    public int setup(String arg, ImagePlus im) { 
     return DOES_8C; // this plugin works on indexed color images 
     } 

    public void run(ImageProcessor ip) { 

     IndexColorModel icm = (IndexColorModel) ip.getColorModel();    
     int pixBits = icm.getPixelSize(); 
     int mapSize = icm.getMapSize(); 

     //retrieve the current lookup tables (maps) for R,G,B 
     byte[] Rmap = new byte[mapSize]; icm.getReds(Rmap); 
     byte[] Gmap = new byte[mapSize]; icm.getGreens(Gmap); 
     byte[] Bmap = new byte[mapSize]; icm.getBlues(Bmap); 

     int[] RGB = new int[3]; 
     int[][] allRGB = new int[256][3]; 
     //put color in rectangle 
     for (int idx = 0; idx < mapSize; idx++){  
       int r = 0xff & Rmap[idx]; //mask to treat as unsigned byte 
       int g = 0xff & Gmap[idx]; 
       int b = 0xff & Bmap[idx]; 
       RGB[0] = r; 
       RGB[1] = g; 
       RGB[2] = b; 

       //save all RGB as array 
       for(int k=0;k<3;k++){ 
        allRGB[idx][k]= RGB[k]; 
       }        
     }  
     tbl(allRGB); 


    } 

    private void tbl(int[][] allRGB){ 

     ImageProcessor newip =new ColorProcessor(256,256); 
     int count = 0 ; 
     for(int i=0;i<16;i++){ 
      for(int j=0;j<16;j++){    
       newip.putPixel(i,j,allRGB[count]);count++; 
      } 
     }       
     ImagePlus cwin = new ImagePlus("TBL", newip); 
     cwin.show();   
    } 

} 

Answer 1

如何创建一个16×16像素ImageProcessor第一

ImageProcessor newip =new ColorProcessor(16,16); 

，然后在年底缩放ImagePlus：

IJ.run(cwin, "Size...", "width=256 height=256 constrain interpolation=None"); 

下面是完整的代码，这些变化：

import ij.*; 
import ij.process.*; 
import ij.gui.*; 
import java.util.*; 
import java.awt.*; 
import ij.plugin.filter.*; 
import ij.process.*; 
import java.lang.Math.*; 
import java.awt.image.IndexColorModel; 


public class colortable_plugin implements PlugInFilter { 

    public int setup(String arg, ImagePlus im) { 
     return DOES_8C; // this plugin works on indexed color images 
     } 

    public void run(ImageProcessor ip) { 

     IndexColorModel icm = (IndexColorModel) ip.getColorModel();    
     int pixBits = icm.getPixelSize(); 
     int mapSize = icm.getMapSize(); 

     //retrieve the current lookup tables (maps) for R,G,B 
     byte[] Rmap = new byte[mapSize]; icm.getReds(Rmap); 
     byte[] Gmap = new byte[mapSize]; icm.getGreens(Gmap); 
     byte[] Bmap = new byte[mapSize]; icm.getBlues(Bmap); 

     int[] RGB = new int[3]; 
     int[][] allRGB = new int[256][3]; 
     //put color in rectangle 
     for (int idx = 0; idx < mapSize; idx++){  
      int r = 0xff & Rmap[idx]; //mask to treat as unsigned byte 
      int g = 0xff & Gmap[idx]; 
      int b = 0xff & Bmap[idx]; 
      RGB[0] = r; 
      RGB[1] = g; 
      RGB[2] = b; 

      //save all RGB as array 
      for(int k=0;k<3;k++){ 
       allRGB[idx][k]= RGB[k]; 
      }        
     }  
     tbl(allRGB); 


    } 

    private void tbl(int[][] allRGB){ 

     ImageProcessor newip =new ColorProcessor(16,16); 
     int count = 0 ; 
     for(int i=0;i<16;i++){ 
      for(int j=0;j<16;j++){    
       newip.putPixel(i,j,allRGB[count]);count++; 
      } 
     }       
     ImagePlus cwin = new ImagePlus("TBL", newip); 
     IJ.run(cwin, "Size...", "width=256 height=256 constrain interpolation=None"); 
     cwin.show();   
    } 

} 

Answer 2

如果我理解该任务的简单的解决办法是用一个具有内部循环，颜色的矩形而不是单个像素，例如，以取代tbl功能

 private void tbl(int[][] allRGB){ 

     ImageProcessor newip =new ColorProcessor(256,256); 
     int count = 0 ; 
     // The following could be inputs if desired. 
     int W = 5; 
     int H = 5; 
     for(int i=0;i<16;i++){ 
      for(int j=0;j<16;j++){    
       for(int w=0; w<W; w++){ 
        for(int h=0; h<H; h++){ 
         newip.putPixel(i*W+w,j*H+h,allRGB[count]); 
        } 
       } 
       count++; 
      } 
     }       
     ImagePlus cwin = new ImagePlus("TBL", newip); 
     cwin.show();   
    }