tag:blogger.com,1999:blog-3335615730905911804.post7911593904500637877..comments2012-05-15T15:14:54.339-05:00Comments on Code Beach: Convert a Color Image to a Gray Scale Image in Jav...Gizmonoreply@blogger.comBlogger11125tag:blogger.com,1999:blog-3335615730905911804.post-54739421778422137442011-06-15T02:59:38.232-05:002011-06-15T02:59:38.232-05:00@Anonymous(April 27, 2010 6:03 PM)
Oh wow, thanks...@Anonymous(April 27, 2010 6:03 PM)<br /><br />Oh wow, thanks so much for that transparent grayscale code. It's a real life saver when making 'disabled' icons.Maartenhttp://www.blogger.com/profile/10666502235294002924noreply@blogger.comtag:blogger.com,1999:blog-3335615730905911804.post-25335240958172693402010-10-19T09:26:49.713-05:002010-10-19T09:26:49.713-05:00When using JAI, a BandCombine operation that calcu...When using JAI, a BandCombine operation that calculates the luminance gives off a great gray scale image at decent speed.<br /><br />PlanarImage gray = JAI.create("bandcombine",image,new double[][] { 0.299, 0.587, 0.114, 0.0 } });Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-3335615730905911804.post-76287597620061403002010-04-27T18:03:40.179-05:002010-04-27T18:03:40.179-05:00In hope for everything to be useful, here is the c...In hope for everything to be useful, here is the code that creates new instance of grayscale transparent image:<br /><br /> ColorSpace gsColorSpace = ColorSpace.getInstance(ColorSpace.CS_GRAY);<br /><br /> ComponentColorModel ccm = new ComponentColorModel(gsColorSpace, true, false,<br /> Transparency.TRANSLUCENT, DataBuffer.TYPE_BYTE);<br /><br /> WritableRaster raster = Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-3335615730905911804.post-64205671161895941992010-04-27T16:58:12.592-05:002010-04-27T16:58:12.592-05:00Thanks for sharing! I'd like to use #2, howeve...Thanks for sharing! I'd like to use #2, however transparency is lost :(.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-3335615730905911804.post-20024479793794090932010-02-03T05:31:46.060-06:002010-02-03T05:31:46.060-06:00Thanks for sharing!Thanks for sharing!Mirajhttp://www.blogger.com/profile/18427694536471958267noreply@blogger.comtag:blogger.com,1999:blog-3335615730905911804.post-69196085888658695262009-10-16T11:32:33.411-05:002009-10-16T11:32:33.411-05:00Very helpful example, but I get different performa...Very helpful example, but I get different performance results with method 1 and 2. Method 1 took me 47 ms and method 2 took 78 ms to transform one 580x580 color image to grayscale.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-3335615730905911804.post-6491703037904193612009-09-12T11:11:59.094-05:002009-09-12T11:11:59.094-05:00I think you forgot to mention the memory overhead ...I think you forgot to mention the memory overhead for transformation #2 and #3 (additional ImageBuffer in memory)...<br />transformation #1 should be less memory consuming than the others.<br /><br />regardsAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-3335615730905911804.post-39568204864558188682009-04-24T01:07:00.000-05:002009-04-24T01:07:00.000-05:00Extremely informative article, well researched and...Extremely informative article, well researched and clearly presented. I am thankful Gizmo took the time to share this informative post.photo restorationhttp://www.sblgraphics.com/restoration-retouching_service.aspxnoreply@blogger.comtag:blogger.com,1999:blog-3335615730905911804.post-10454804260671785212009-03-05T08:41:00.000-06:002009-03-05T08:41:00.000-06:00Hey dude.. the code was inofrmative.. But cn u gim...Hey dude.. the code was inofrmative.. But cn u gimme where to implement it??? V r working on a title hw to convert JPEG images to PGM....<BR/><BR/>//import java.io.*;<BR/>import javax.media.jai.*;<BR/>import javax.imageio.ImageIO;<BR/> <BR/>public class ConvertSpeed<BR/>{<BR/>private static String inputFileName = "C:\\Program Files\\balloon.jpg"; <BR/>private static String outputFileName = "C:\\You Know Phoohttp://www.blogger.com/profile/15033830437374094581noreply@blogger.comtag:blogger.com,1999:blog-3335615730905911804.post-57976250071151201942009-03-02T10:38:00.000-06:002009-03-02T10:38:00.000-06:00how to implement the code?..can u give me full cod...how to implement the code?..can u give me full code example of it.. i really blur about this...i take a snapshot using <BR/><BR/>byte[] image = videoControl.getSnapshot("encoding=jpeg")<BR/><BR/>i hope u can help me..thanks..Mohd Rafiulddin Marzukihttp://www.blogger.com/profile/15495639326779294947noreply@blogger.comtag:blogger.com,1999:blog-3335615730905911804.post-66122364932427982842008-12-29T17:03:00.000-06:002008-12-29T17:03:00.000-06:00Nice article, just what I wanted.<br><br>You didn'...Nice article, just what I wanted.<BR/><BR/>You didn't include all the implementation notes and stuff. simple, yet very effective.<BR/><BR/>Thank you again.bitkidokuhttp://www.blogger.com/profile/09141709808294868945noreply@blogger.com