Search found 12163 matches
- 2010-03-24T06:44:53-07:00
- Forum: Users
- Topic: How to convert TIFFG4 compressed 1-bit bilevel to gray
- Replies: 27
- Views: 54793
Re: How to convert TIFFG4 compressed 1-bit bilevel to gray
On Windows 7, 4 GB RAM, IM 6.6.0-8: convert large_g4.tif -scale 10% -colorspace Gray preview.tif convert large.tif -scale 10% -colorspace Gray preview2.tif both worked fine, with the TIFFReadDirectory warning on the first file. Each used 0.5GB of my memory, but your mileage will vary. I suggest you ...
- 2010-03-24T06:22:10-07:00
- Forum: Users
- Topic: Converting BMP to fixed size JPEG
- Replies: 2
- Views: 6725
Re: Converting BMP to fixed size JPEG
convert in.bmp -quality 50 out.jpg I don't think IM has an automated facility to choose the highest quality with a cap on the resulting filesize. You would have to do that in a script. Personally, I would reduce the "quality" number until either I reached the 64KB limit or quality became ...
- 2010-03-24T06:14:00-07:00
- Forum: Users
- Topic: Reduce noise like Photoshop
- Replies: 12
- Views: 33112
Re: Reduce noise like Photoshop
You can do all that in ImageMagick, including median and auto levels. I don't know how IM's noise reduction compares to Photoshop's -- I don't use PS, nor do I de-noise images. You would have to play with IM to see what you like. For example: convert in.jpg -resize 320x240+0+0 -noise 5 -median 5 -un...
- 2010-03-23T17:11:27-07:00
- Forum: Users
- Topic: How to convert TIFFG4 compressed 1-bit bilevel to gray
- Replies: 27
- Views: 54793
Re: How to convert TIFFG4 compressed 1-bit bilevel to gray
How much memory do you have? Try it with no other software running. Put it online, and someone with a larger machine might have a go at it.
- 2010-03-23T17:07:15-07:00
- Forum: Users
- Topic: Convert/ Caption- Working out whether to resize text
- Replies: 12
- Views: 27505
Re: Convert/ Caption- Working out whether to resize text
There might be a shortcut available by calling MagicWand from a custom program, but I can't see a quicker way using commands. It needs two passes: first to try at the user-requested pointsize, then (if necessary) let IM choose a smaller size. I don't think there is any way to tell the first pass to ...
- 2010-03-23T12:12:12-07:00
- Forum: Users
- Topic: How to get mosaic view of an image...?
- Replies: 13
- Views: 26725
Re: How to get mosaic view of an image...?
Did I say 5.8? I meant 6.5.8. I've wanted 6.6 for a while, but I've been working on a project with a climax/demo last Friday. Everything had to work exactly as rehearsed with no surprises whatsoever, apart from my fluff-ups of course. http://www.imagemagick.org/script/command-line-options.php under ...
- 2010-03-23T11:12:24-07:00
- Forum: Users
- Topic: How to get mosaic view of an image...?
- Replies: 13
- Views: 26725
Re: How to get mosaic view of an image...?
Ah, thanks. I've only just upgraded from 5.8. All these wonderful new toys! (Sorry for calling you "ftw".)
- 2010-03-23T08:58:55-07:00
- Forum: Users
- Topic: How to get mosaic view of an image...?
- Replies: 13
- Views: 26725
Re: How to get mosaic view of an image...?
@ftw42:
This "@" switch on crop, which seems to divide into equal portions, is new to me. I can't find it documented anywhere. Is it?
Code: Select all
convert fish.jpg -crop 3x3@ ...
- 2010-03-23T03:09:38-07:00
- Forum: Users
- Topic: Convert/ Caption- Working out whether to resize text
- Replies: 12
- Views: 27505
Re: Convert/ Caption- Working out whether to resize text
Add -geometry center and it should center it the best it can, if I am not mistaken You mean, I assume, "-gravity center". Yes, -gravity works with caption. i believe that you can add -geometry to -gravity in order to adjust the alignment. "-geometry" doesn't work for me with &qu...
- 2010-03-22T09:31:40-07:00
- Forum: Users
- Topic: Best command for resizing large pics for highest quality.
- Replies: 16
- Views: 43961
Re: Best command for resizing large pics for highest quality
At 800% magnification, I can't see any unsharp masking in that PS image, compared to the IM version.
On a flicker comparison, I can't see any difference -- there is no flicker.
Incidentally, it may be worth upgrading IM that is a couple of years old.
On a flicker comparison, I can't see any difference -- there is no flicker.
Incidentally, it may be worth upgrading IM that is a couple of years old.
- 2010-03-22T09:02:11-07:00
- Forum: Users
- Topic: Save multiple files keeping filenames
- Replies: 3
- Views: 8587
Re: Save multiple files keeping filenames
I don't understand what you want. "mogrify" will change files without creating new ones. Does that help?
[Cross-posted]
[Cross-posted]
- 2010-03-22T08:44:48-07:00
- Forum: Users
- Topic: Best command for resizing large pics for highest quality.
- Replies: 16
- Views: 43961
Re: Best command for resizing large pics for highest quality
When I place those images side-by-side, I can't detect any difference. (They look different when placed vertically on LCD monitors, because LCD monitors do that.) When I examine them with Gimp color picker, sample average, radius 20, on the red truck at location 261,82: image 52194_1269256674.jpg re...
- 2010-03-22T04:36:58-07:00
- Forum: Users
- Topic: Image size after convert -composite
- Replies: 5
- Views: 12315
Re: Image size after convert -composite
Hmm. Perhaps a script could use "-metric" to graph size versus quality setting, and find an optimum. I'll add this to my huge pile of "things to try when I can find the time".
- 2010-03-22T04:29:39-07:00
- Forum: Users
- Topic: Image size after convert -composite
- Replies: 5
- Views: 12315
Re: Image size after convert -composite
I think the default IM uses for saving jpegs is 85. Perhaps your input files don't warrant this, so you might try "-quality 50" or 25 or 10. (I often find that 50 is good enough for web work, and would expect 10 to be very small but horrble quality.) I wish IM (and other tools) had an auto...
- 2010-03-22T03:21:55-07:00
- Forum: Users
- Topic: Image size after convert -composite
- Replies: 5
- Views: 12315
Re: Image size after convert -composite
One of your inputs is a jpeg. I suspect it is a photograph, and these don't compress so well in png format. (Partly because png is lossless, but mostly because png just isn't designed to compress photographs well). If you save the result to jpg, you can probably get a much smaller file size. "Q...