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POImage resizing and displaying in a JPanel or a JLabel without loss of quality
 

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  1. POImage resizing and displaying in a JPanel or a JLabel without loss of quality
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    <p>I'm developing a java program to capture employee images at the time of registration using a webcam. I can obtain the picture without any problem, and save it in my C: drive but upon retrieval of the image only a part of the image is displayed on the label. Is there a way of re sizing the JPEG before saving it? or before displaying it? like shrinking it without a quality loss.... </p> <p>Thankz a lot Cheerz! :)!</p> <p>okay guys... here goes:- I have commented the code in the way I have used them.</p> <pre><code>//This method will capture the image from the interface and save it under the unique employee ID public String captureImage(int picId){ FrameGrabbingControl ControlFG = (FrameGrabbingControl) broadcast.getControl("javax.media.control.FrameGrabbingControl"); Buffer buffer = ControlFG.grabFrame(); BufferToImage image = new BufferToImage((VideoFormat)buffer.getFormat()); img = image.createImage(buffer); path="c:\\employee"+picId+".jpg"; saveJPG(img,path);//method will save the image return path; } public void saveJPG(Image img, String s){***//method will save the image*** System.out.println(s); BufferedImage bi = new BufferedImage(img.getWidth(null), img.getHeight(null), BufferedImage.TYPE_INT_RGB); Graphics2D g2 = bi.createGraphics(); g2.drawImage(img,null,null); FileOutputStream out = null; try{ out = new FileOutputStream(s); } catch (java.io.FileNotFoundException io){ System.out.println("File Not Found"); } JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out); JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(bi); param.setQuality(0.5f,false); encoder.setJPEGEncodeParam(param); try { encoder.encode(bi); out.close(); } catch (java.io.IOException io) { System.out.println("IOException"); } } </code></pre> <p>maybe I can scale the image while saving.. so that I can retrieve the scaled image.. </p>
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    1. USDilshan Ranaweera
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    1. CO*"shrinking it without a quality loss"* That is not possible. Various smoothing techniques can partly hide the artifacts of image resize, but lower the resolution in WxH and the image 'quality' must be less.
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      1. USAndrew Thompson
    2. CO@AndrewThompson yeah thats true.... a drop in quality is alright but the entire image is not getting displayed...so far only a part of the shrunk image was all i could obtain..
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      1. USDilshan Ranaweera
    3. COFor better help sooner, post an [SSCCE](http://sscce.org/). Perhaps hot-link to one of [these images](http://pscode.org/media/#image).
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      1. USAndrew Thompson
 

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