[REBOL] Re: resizing JPG images
From: jasonic:nomadics at: 22-Oct-2001 9:59
bay: load-thru/binary http://www.rebol.com/view/bay.jpg
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]
thanks for the example..
> 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)
hmm.. Yes this is problem for me too.
And it looks like it can only be solved at the moment
using installation-demanding external image processing tools
[GIMP,ImageMagick, PIL=PythonImagingLibrary, or the excellent commercial MM
Fireworks4 ]
bay.png = 59kb
a good looking JPEG version of same [80%] is only 9kb..
Image compresssion is an art and a science, but lack of any JPEG save
control in REBOL/View really concerns me.
Typical example: digital video still capture 640x480 BMP averages 240kb. A
decent JPEG version of same: 40kb
What to do?
Are there problems/plans for REBOL/View to support JPEG?
Recent loss of DSL service here [Rhythms bankruptcy] has made me painfully
aware again of download sizes, and of REBOL's highly aeronautic design!
- Jason
