They do not do image manipulation on client side which only have poor API. Since the source graphic is already on server, they use some tool (for example ImageMagick) process it on server, and reload it for you. Since you only need to see screen DPI photos, the file transfer speed + server image processing time will be much less than client bitmap processing.
larryzzl <[EMAIL PROTECTED]> wrote: My image is 1024 * 768. It's so slow. But the www.picnik.com does it very well. It change the image data so fast. Please try the Exposure function it the web. I just want to kown how to do this. Thanks --- In [email protected], DreamCode <[EMAIL PROTECTED]> wrote: > > How big is the image you're processing in pixels? > > You have to consider that processing a 400x400 pixel image is a loop > of 160k iterations.... Now multiply that by the number of cpu cycles > pr. pixel and you will start to see scary numbers..... > > --allan > > > On 12/3/07, Alex Harui <[EMAIL PROTECTED]> wrote: > > Image processing is always CPU intensive. Flash is not optimized for it > > either. > > > > > > > > ________________________________ > > > > From: [email protected] [mailto:[EMAIL PROTECTED] On > > Behalf Of Larry Zhang > > Sent: Monday, December 03, 2007 2:03 AM > > To: [email protected] > > Subject: [flexcoders] How to improve BitmapData processing speed? > > > > > > > > Hello all, > > > > I am processing a bitmap data in Flex 3 beta 2. I want to do > > something to the pixels so I need to get them all and add my action to > > them. But I found it is very slow if I get pixels one by one by using > > two for loop and getPixel() method. Of course the setPixel() method is > > also slow. Then I try the getPixels() to gain a byteArray. It's fast but > > I still need to loop the byte array and readUnsignedInt() to get every > > color pixel and set them back. This also takes me much time. > > > > > > > > Is there any way to make it faster or I just use the wrong > > method to do such things? > > > > > > > > Thanks. > > > > > > > > ============================== > > > > Make Every Day Count > > > > > > > > Larry Zhang > > > > > > > > > > > > > --------------------------------- Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now.
