Mailing List Archive: 49091 messages
  • Home
  • Script library
  • AltME Archive
  • Mailing list
  • Articles Index
  • Site search

[REBOL] Re: resizing JPG images

From: carl:cybercraft at: 23-Oct-2001 9:09

On 23-Oct-01, Jose Manuel Alvarez wrote:
> The problem with this solution is the size of the thumbnail which is > 17K while the initial image is 8K (and a jpg thumbnail would be 3K)
Sigh - I hadn't checked the file size...
>> From: Carl Read <[carl--cybercraft--co--nz]> >> Reply-To: [rebol-list--rebol--com] >> To: [rebol-list--rebol--com] >> Subject: [REBOL] Re: resizing JPG images >> Date: Tue, 23 Oct 2001 00:55:42 +1200 >> On 22-Oct-01, Jose Manuel Alvarez wrote: >>> What about resizing in a Core script without having to use View. >> I don't think core can process images. >>> If >>> View is the answer, how can I save the resized picture (sorry, >> but I >>> am View newbie !) >> View can load JPGs (and GIFs and PNGs) but the only compressed >> image format it can save in is PNG. For instant, cut and paste the >> following five lines into the console... >> bay: load-thru/binary >> thumb-size: bay/size / 2 >> thumb-bay: to-image layout [origin 0x0 image bay thumb-size] >> save/png %thumb-bay.png thumb-bay >> view layout [image bay image thumb-bay] >> and they should save a quarter-sized version of the bay image to >> disk and then display both versions in a window. >> Don't be afraid of using PNGs for your thumbnails. As they're a >> loss-less image format they probably make better thumnails than >> JPGs.
-- Carl Read