By the way, if it was a matter of faster processing for the box blur, I think it would be effective for images that were of thumbnail size.
For larger images, you'd probably want to go with the gaussian. <!----------------//------ andy matthews web developer certified advanced coldfusion programmer ICGLink, Inc. [EMAIL PROTECTED] 615.370.1530 x737 --------------//---------> -----Original Message----- From: Rick Root [mailto:[EMAIL PROTECTED] Sent: Wednesday, December 13, 2006 8:58 AM To: CF-Talk Subject: Re: Code Comparison: Java - CF Andy Matthews wrote: > Good job Rick... > > Now to say that I don't know if I'm happy with the quality of that blur. > It's sort of pixel-y. Could just be the amount of blur you put on it I > suppose... Well, box blurs aren't perfect, that's for sure. They're faster than gaussian blurs. I've got the gaussian blur working: Compare the two: http://www.opensourcecf.com/imagecfc/thumbnail_test/compare.htm It doesn't seem to be working the same way that photoshop does... My gaussian blur (above) used a radius of 5. To get a similar looking gaussian blur of the original image in photoshop, the radius was only 2. > Keep up the good work regardless...I assume that this is for adding into > Image.cfc? Yup. I probably should write a java class to do all this math crap, Coldfusion doesn't do it very well... it took nearly 3 minutes to generate the gaussian blur! I guess looping through an array of 105,200 pixels takes some time using CFML. I wonder if the code can be optimized... here it is if anyone would like to make suggestions (other than going back to a java class) for (y=0; y lt height; y=y+1) { index = y; ioffset = y*width; for (x=0; x lt width; x=x+1) { r = 0; g = 0; b = 0; a = 0; moffset = cols2; for (col = 0-cols2; col lte cols2; col=col+1) { f = variables.arrObj.get(matrix, javacast("int",moffset+col)); if (f neq 0) { ix = x+col; if ( ix lt 0 ) { ix = 0; } else if ( ix gte width) { ix = width-1; } rgb = variables.arrObj.get(inPixels,javacast("int",ioffset+ix)); separatedRGB = separateRGB(rgb); a = a + f * separatedRGB.rgbAlpha; r = r + f * separatedRGB.rgbRed; g = g + f * separatedRGB.rgbGreen; b = b + f * separatedRGB.rgbBlue; } } if (alpha) { ia = clamp(a+0.5,0,255); } else { ia = 255; } ir = clamp(r+0.5,0,255); ig = clamp(g+0.5,0,255); ib = clamp(b+0.5,0,255); newRGB = combineRGB(ia,ir,ig,ib); variables.arrObj.setInt(outPixels, javacast("int",index), javacast("int",newRGB)); index = index + height; } } ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Create robust enterprise, web RIAs. Upgrade & integrate Adobe Coldfusion MX7 with Flex 2 http://ad.doubleclick.net/clk;56760587;14748456;a?http://www.adobe.com/products/coldfusion/flex2/?sdid=LVNU Archive: http://www.houseoffusion.com/groups/CF-Talk/message.cfm/messageid:263931 Subscription: http://www.houseoffusion.com/groups/CF-Talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4
