images code

Howto resize multiple pictures, graphics, images

for k in $(ls *.jpg); do convert -resize 800 -quality 80 $k r800-$k; done

to bash images convert resize magick by flynets on Apr 29, 2008

text input /w background image

// self-explanatory. see title.

<style type="text/css">
.searchBox{
  background-image:url('http://www.dhtmlgoodies.com/tips-and-tricks/input-with-background/images/magnifying-glass.gif');
  background-repeat:no-repeat;
  padding-left:20px;
}
</style>

<input type="text" name="search" style="border:2px inset gray;color:black;background-color:lightyellow;font-family:arial narrow;font-weight:bold;font-size:9pt;" class="searchBox">

to css images form background by thescriptkeeper on Aug 22, 2007

Image aggregator

This PHP snippet outputs the contents of a table (beginning & ending tags not included) containing all the images from the current directory.

<?PHP
 $columns = 3;
 $im = glob("*.{gif,jpg,png}", GLOB_BRACE);
 $rows = ceil(count($im) / $columns);
 for ($i = 0; $i < $rows; $i++) {
  echo "\n<TR>";
  for ($j = $columns*$i; isset($im[$j]) && $j - $columns*$i < $columns; $j++) {
   echo "<TD>$im[$j]<BR><IMG SRC='$im[$j]'></TD>";
  }
  echo "</TR>";
 }
?>

to files php images directory glob filesystem by Minimiscience on Jul 05, 2007

Java - Erode

// JAI Filter erode

public RenderedImage erode(BufferedImage img)
	{
		KernelJAI kernel = new KernelJAI(7, 7, new float[]{
															0, 0, 0, 0, 0, 0, 0,
															0, 1, 1, 1, 1, 1, 0,
															0, 1, 1, 1, 1, 1, 0,
															0, 1, 1, 1, 1, 1, 0,
															0, 1, 1, 1, 1, 1, 0,
															0, 1, 1, 1, 1, 1, 0,
															0, 0, 0, 0, 0, 0, 0
															});
		ParameterBlock pb = new ParameterBlock();
		pb.addSource(img);
		pb.add(kernel);
		
		return JAI.create("erode", pb);
	}

to java images image RGB filter jpg j2me gray JAI by whitetiger on Nov 05, 2006

Java - subTraction

// Use JAI filter

public RenderedImage subTraction(BufferedImage img1, BufferedImage img2)
	{
		ParameterBlock pb = new ParameterBlock();
		pb.addSource(img1);
		pb.addSource(img2);
		
		return JAI.create("subtract", pb);
	}

to java images image RGB filter jpg j2me gray JAI by whitetiger on Nov 05, 2006

Java - showBitPlanes

// the input it must be a b/w image

public BufferedImage showBitPlanes(BufferedImage bi, int lv)
	{
		int level = 0;
		
		switch(level)
		{
			case 0:
				level = 128;
				break;
			case 1:
				level = 64;
				break;
			case 2:
				level = 32;
				break;
			case 3:
				level = 16;
				break;
			case 4:
				level = 8;
				break;
			case 5:
				level = 4;
				break;
			case 6:
				level = 2;
				break;
			case 7:
				level = 1;
				break;
			default:
					return null;
		}
		
		int width = bi.getWidth();
		int height = bi.getHeight();
		
		BufferedImage img = new BufferedImage(width, height, bi.getType());
		
		for(int x=0; x<width; x++)
			for(int y=0; y<height; y++)
				img.setRGB(x, y, ((bi.getRGB(x, y) & level)/level)*255);
		
		return img;
	}

to java images image RGB filter jpg j2me bit gray planes by whitetiger on Nov 04, 2006

Matlab - showBitPlanes

% Ritorna i Bit Plabes dell'immagine a toni di grigio

function showBitPlanes(img)

    imgGray = double( rgb2gray(img) );
    titleString = 'bit planes ';
    
    % MSB ... LSB
    k = 128;
    
    for b=1:8
        
        subplot(2, 4, b);
        imshow( (bitand(imgGray, k) / k) * 255 ); % Fa un and dei bit
        title([titleString int2str(b-1)]);
        k = k/2; % Shifta di 2 i bit
        
    end;
    
return;

to images level bit matlab planes by whitetiger on Nov 04, 2006

// pixel before the filter
// |--|--|--|
// | | | |
// |--|--|--|
// | | *| |
// |--|--|--|
// | | | |
// |--|--|--|

// pixel after the filter
// |--|--|--|
// | *| *| *|
// |--|--|--|
// | *| *| *|
// |--|--|--|
// | *| *| *|
// |--|--|--|

public BufferedImage dilate3(BufferedImage bi)
	{
		BufferedImage buff = new BufferedImage(bi.getWidth(), bi.getHeight(), bi.getType());
		
		Kernel kernel = new Kernel(3, 3, new float[] {
														1f, 1f, 1f, 
														1f, 1f, 1f, 
														1f, 1f, 1f
													 });
		
		ConvolveOp op = new ConvolveOp(kernel);
		op.filter(bi, buff);
		
		return buff;
	}

to java images image RGB filter jpg j2me gray dilate by whitetiger on Nov 04, 2006

Java - EdgeW / EdgeH

public BufferedImage EdgeW(BufferedImage bi)
	{
		BufferedImage buff = new BufferedImage(bi.getWidth(), bi.getHeight(), bi.getType());
		
		Kernel kernel = new Kernel(3, 3, new float[] {
														-1f, 0f, 1f, 
														-2f, 0f, 2f, 
														-1f, 0f, 1f
													 });
		
		ConvolveOp op = new ConvolveOp(kernel);
		op.filter(bi, buff);
		
		return buff;
	}

	public BufferedImage EdgeH(BufferedImage bi)
	{
		BufferedImage buff = new BufferedImage(bi.getWidth(), bi.getHeight(), bi.getType());
		
		Kernel kernel = new Kernel(3, 3, new float[] {
														-1f, -2f, -1f, 
														 0f,  0f,  0f, 
														 1f,  2f,   1f
													 });
		
		ConvolveOp op = new ConvolveOp(kernel);
		op.filter(bi, buff);
		
		return buff;
	}

to java images image RGB filter jpg j2me gray by whitetiger on Nov 03, 2006

Java - Brightness

public BufferedImage brightness(BufferedImage bi, float value)
	{
		BufferedImage buff = new BufferedImage(bi.getWidth(), bi.getHeight(), bi.getType());
		
		Kernel kernel = new Kernel(1, 1, new float[] {value});
		
		ConvolveOp op = new ConvolveOp(kernel);
		op.filter(bi, buff);
		
		return buff;
	}

to java images image RGB converter filter jpg j2me gray by whitetiger on Nov 03, 2006

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