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Re: Is there any idea to improve execute time? Started by tcc5936 at 05-03-2007 11:24. Topic has 3 replies. LEAD Support Fo... » Enduser » LEADViEW » Re: Is there any idea to improve execute time?

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05-03-2007, 11:24 tcc5936 Joined on 05-03-2007 Posts 2 Is there any idea to improve execute time? below codes is to slow(when picture size is 320X240 then execute time about 2 sec.)               Dim nHeight As Long = view.Raster.BitmapHeight         Dim nWidth As Long = view.Raster.BitmapWidth         Dim x As Long = 0         Dim y As Long = 0         Dim picArray(320, 240) As Long         For y = 0 To nHeight - 1             For x = 0 To nWidth - 1                 picArray(x, y) = CLng(view.Raster.Pixel(x, y))             Next         Next Is there any idea to improve execute time? Thanks a lot.   Beat regards., JACKY    Report

05-03-2007, 14:59 GregR Joined on 05-31-2006 In House Posts 1,705 Re: Is there any idea to improve execute time? What LEADTOOLS version and interface (API, CLIB, OCX, etc.) are you using? Your code above is quite simple, so there's really not much refactoring you can do to improve it's speed.  Either way you're going to be executing picArray(x,y) = CLng(view.Raster.pixel(x,y)) 76,800 times.  The only thing I can see that might increase execution time is to use a variable for nHeight -1 rather than calculating it at the for loop.  Even so, this would only shave off a few microseconds...possibly even only nanoseconds depending on your processor. Dim yMax as Long = nHeight -1 Dim xMax as Long = nWidth - 1 For y = 0 To yMax             For x = 0 To xMax                 picArray(x, y) = CLng(view.Raster.Pixel(x, y))             Next         Next What exactly are you trying to do?  There might be a better way to do it if you explain your goals in more detail. Greg Ross LEADTOOLS Technical Support    Report

05-04-2007, 19:30 tcc5936 Joined on 05-03-2007 Posts 2 Re: Is there any idea to improve execute time?  Thanks GregR! I use ocx version. is there any method that quick copy pixels data to a two dimension array?   Beast Regards., jacky    Report

05-07-2007, 14:17 GregR Joined on 05-31-2006 In House Posts 1,705 Re: Is there any idea to improve execute time? I've spoken with some of my colleagues and they agree that what you are currently doing is already the best way to copy the pixel data into a two-dimensional array. Greg Ross LEADTOOLS Technical Support    Report

LEAD Support Fo... » Enduser » LEADViEW » Re: Is there any idea to improve execute time?

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