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Awesome... Up to 95% and greater!!! Thanks,,, -Frank

 

Where should I send them???  Thanks,,, Frank

I have been testing recognition rate for the SwiftDecoder using MicroQR barcodes. The barcodes are 3/4" x 3/4" black on white, printed on regular printer stock. I have shot roughly 500 images with a Nikon D40 and D50, altering camera settings such as exposure rate, image quality, image size, etc. The results are between 75% to 85% ...

Nope,,, I was wrong...  Forgot that the test app does convertion to gray and indexed for you... Still getting the same error... "A Graphics object cannot be created from an image that has an indexed pixel format." This stops me from being able to create the required format from a jpg in .NET... Any more ideas??? Thanks...

ok,,, got it... Had to first convert to gray using bit shifting... Then used a graphics object to redraw as PixelFormat.Format8bppIndexed... Then save to a bmp file... The only problem I see now is the large size of the bmp created...  I m sure I can get this to a reasonable size though... Z

Yeah,,, already tried that...  The key word here is "indexed"...  The link you provided converts to grayscale,,, sure,,, but is VERY slow,,, and is not indexed...  The resulting image still will not work with your software...  There are ways to do this unmanaged to increase performance by an order of magnitude ...

I have recently fount that .NET 2.0 will not convert to a grayscale 8 bit pixel format out of the box... It seems that the Swift Decoder Demonstrator application that comes with the sd2.dll does this by using ImageConver.dll...  However,,, no documentation was provided on how to use this ImageConvert.dll... Is this documentation ...