Search found 4 matches

by abukaj
2014-06-27T02:30:53-07:00
Forum: Users
Topic: How to determine whether an image is streamable?
Replies: 0
Views: 2367

How to determine whether an image is streamable?

I am developing a server for automated processing of BIG images (size of 22500x17500 is not the greatest possible) To process them in a finite memory I need to convert them first into an RGB stream. Stream (described as "a lightweight tool") seemed to be a perfect tool to do so, however af...
by abukaj
2014-06-25T06:54:34-07:00
Forum: Bugs
Topic: Stream zero output on palette (and grayscale) PNG
Replies: 7
Views: 7682

Re: Stream zero output on palette PNG

I found that the same problem is with grayscale-PNGs. applications must use a different part of libpng (the progressive reader, found in pngpread.c, instead of the sequential reader, found in pngread.c), to achieve streaming of a PNG datastream. Would it not move the memory usage of stream out of co...
by abukaj
2014-06-18T09:47:37-07:00
Forum: Bugs
Topic: Stream zero output on palette (and grayscale) PNG
Replies: 7
Views: 7682

Re: Stream zero output on palette PNG

Thanks for the piece of advice, however what I need is to stream the image without loading it into the memory (AFAIK convert does it that way). I am developing a server for hosting images of brain tissue of high resolution, so the solution should be also format-independent. Luckily it is very unlike...
by abukaj
2014-06-17T03:16:13-07:00
Forum: Bugs
Topic: Stream zero output on palette (and grayscale) PNG
Replies: 7
Views: 7682

Stream zero output on palette (and grayscale) PNG

When I am trying to stream file Ambermoon-lyramion.6400x6400.png my output is a stream of zeros. $ stream Ambermoon-lyramion.6400x6400.png - | hexdump 0000000 0000 0000 0000 0000 0000 0000 0000 0000 * 7530000 However other IM tools seem to open it properly (display, convert etc.). I think the proble...