Search found 3 matches

by mpheyse
2017-03-04T10:22:35-07:00
Forum: Users
Topic: jpg to bmp grayscale - colorspace still sRGB
Replies: 26
Views: 22003

Re: jpg to bmp grayscale - colorspace still sRGB

For clarification, Pipe to non-image utilities that don't understand image formats. Chopping off the BMP header isn't hard.


even weirder "convert.exe 92-all.bmp -print "%[mean]" null.bmp"

Returns a value of "23644"

which is 0x5C5C

Which 'looks' like its Two channel, to me.

I would have ...
by mpheyse
2017-03-04T10:18:49-07:00
Forum: Users
Topic: jpg to bmp grayscale - colorspace still sRGB
Replies: 26
Views: 22003

Re: jpg to bmp grayscale - colorspace still sRGB

>o you really want a grayscale non-palette format? Why?
To Pipe, a non-compressed easy pixel format into other programs without duplicating every pixel's value 3or4 times (RGB or RGBA).

BMP is the easiest simplest, and has 0 compression, its a header, and a list of pixels.


Another odd thing I've ...
by mpheyse
2017-03-03T19:30:30-07:00
Forum: Users
Topic: jpg to bmp grayscale - colorspace still sRGB
Replies: 26
Views: 22003

Re: jpg to bmp grayscale - colorspace still sRGB

I am fairly sure your all wrong and that gray scale BMP's were supported back in the 'old' days. I seem to recall MSpaint locking out the color palette in that grayscale mode, giving a set of common gray values.

As a quick test I opened a RGB channel-copy gray-scale BMP that IM is making, in ...