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Date Posted: 17:47:42 06/04/01 Mon
Author: Michel
Subject: Re: How save BW image as JPEG?
In reply to: Ann Weaver 's message, "Re: How save BW image as JPEG?" on 16:29:51 06/04/01 Mon

Hi Ann,

I would assume the resize is the more time consuming. The conversion should be fast even on large images. For the resizing, are you using interpolation on the TResizeTransform. I would try it without interpolation, and the quality may still be very acceptable.

Best regards,


>I have this all working now but is running fairly slow
>due to the conversion from B/W to Grayscale. I am
>scanning the images at B/W 300dpi which seems to be
>about the minimum I can go and still get a good read
>of the barcode contained in the image. However, due
>to the size of the image it makes the conversion from
>B/W to grayscale take about 10 seconds or so to
>convert (which is a necessity to store the image as
>.jpg). I then resize the image as I don't need/want to
>store an image of that size. If I resize the image
>prior to the conversion it goes faster but I lost a
>lot of image quality that way. Conversion first, then
>resize works great but lacking speed.
>Does anyone have any suggestions on how to speed up
>this process?

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