resize-image

问题 We are using Java2D to resize photos uploaded to our website, but we run into an issue (a seemingly old one, cf.: http://forums.sun.com/thread.jspa?threadID=5425569) - a few particular JPEGs raise a CMMException when we try to ImageIO.read() an InputStream containing their binary data: java.awt.color.CMMException: Invalid image format at sun.awt.color.CMM.checkStatus(CMM.java:131) at sun.awt.color.ICC_Transform.<init>(ICC_Transform.java:89) at java.awt.image.ColorConvertOp.filter

问题 I am trying to write my own function for scaling up an input image by using the Nearest-neighbor interpolation algorithm. The bad part is I am able to see how it works but cannot find the algorithm itself. I will be grateful for any help. Here\'s what I tried for scaling up the input image by a factor of 2: function output = nearest(input) [x,y]=size(input); output = repmat(uint8(0),x*2,y*2); [newwidth,newheight]=size(output); for i=1:y for j=1:x xloc = round ((j * (newwidth+1)) / (x+1));