Search found 65 matches

by muccigrosso
2020-04-02T05:21:12-07:00
Forum: Users
Topic: Query about temp files
Replies: 1
Views: 123

Query about temp files

When converting a folder full of files, I can sometimes see files with a ~ appended to the end of an existing file's name appear. So a file like "19.png~" will appear. Am I correct to assume that these are related to the use of temp files in the conversion process? I'm guessing that IM moves the ori...
by muccigrosso
2019-06-08T15:26:30-07:00
Forum: Users
Topic: ImageMagick with Preview
Replies: 12
Views: 5245

Re: ImageMagick with Preview

It works fine with XQuartz on my Mac. Use display, then left-click the image to get the menu. You are correct. My mistake. I had not used that in a while. What I have trouble with is getting coordinate measurement features that used to exist. But perhaps I do not recall the key options to use along...
by muccigrosso
2019-06-07T20:31:08-07:00
Forum: Users
Topic: ImageMagick with Preview
Replies: 12
Views: 5245

Re: ImageMagick with Preview

It works fine with XQuartz on my Mac. Use display, then left-click the image to get the menu.
by muccigrosso
2018-11-26T00:38:03-07:00
Forum: Users
Topic: Analyze a line of pixels.
Replies: 14
Views: 7421

Re: Analyze a line of pixels.

It looks like the gray might work, but since the images appear to be basically grayscale, why not use a highly colored background, like a bright red piece of paper? Finding the gaps with that should be easier.
by muccigrosso
2018-11-22T00:59:37-07:00
Forum: Users
Topic: Convert pixels within IM?
Replies: 3
Views: 3674

Re: Convert pixels within IM?

@snibo, thanks! That's the approach I was looking for. (I often find that I just need a new way of thinking about what I'm trying to do to get IM to work for me.)

Turns out that I don't want to add the border before trimming, or at least I don't want to add a black one. A white one works fine.
by muccigrosso
2018-11-18T18:34:57-07:00
Forum: Users
Topic: Convert pixels within IM?
Replies: 3
Views: 3674

Convert pixels within IM?

I'm working with single rows of pixels in binary images, so a bunch of white and black pixels. What I'd like to do is make sure that all the pixels between the first and the last black ones are also black. For example, if the row were: 0 0 0 1 0 0 1 0 0 0 It would become 0 0 0 1 1 1 1 0 0 0 Can I do...
by muccigrosso
2018-11-18T18:23:59-07:00
Forum: Users
Topic: -rotate more than double jpg size
Replies: 5
Views: 4046

Re: -rotate more than double jpg size

Good to know, though it still re-compresses when that option is chosen.
by muccigrosso
2018-11-18T15:35:42-07:00
Forum: Users
Topic: -rotate more than double jpg size
Replies: 5
Views: 4046

Re: -rotate more than double jpg size

Could you also use exiftool to alter the orientation tag of your jpegs?

Code: Select all

exiftool -Orientation=3 <filename>
Some apps will ignore this tag (like IM), which is why it might not work for you.
by muccigrosso
2018-10-15T08:46:02-07:00
Forum: Bugs
Topic: Problem with -depth on PNG images
Replies: 3
Views: 6229

Re: Problem with -depth on PNG images

Yeah, I do this a lot and the problem just started.
by muccigrosso
2018-10-15T00:06:38-07:00
Forum: Bugs
Topic: Problem with -depth on PNG images
Replies: 3
Views: 6229

Problem with -depth on PNG images

I'm trying to do a simple reduction of the depth of some grayscale images (of text) that I have. They're in PNG format. When I use a depth of 2 or 3, the entire image gets compressed into the left side of the canvas, leaving the side half black. It only seems to happen with gray PNG files. I can rep...
by muccigrosso
2018-09-25T11:51:02-07:00
Forum: Users
Topic: TIFF compression not working?
Replies: 3
Views: 5004

Re: TIFF compression not working?

This seems to be all fixed in IM 7.0.8-12.
by muccigrosso
2018-09-04T11:22:50-07:00
Forum: Users
Topic: TIFF compression not working?
Replies: 3
Views: 5004

TIFF compression not working?

Is there a problem with tiff group4 and fax compression? I'm having trouble getting good compression with them, and perhaps coincidentally these are the two compression schemes that were affected by this patch . For example, magick logo: -threshold 80% -alpha off -monochrome -compress METHOD -qualit...
by muccigrosso
2018-09-02T22:22:47-07:00
Forum: Users
Topic: How to create a group4 compressed tiff with tiff:photometric: min-is-black?
Replies: 4
Views: 4447

Re: How to create a group4 compressed tiff with tiff:photometric: min-is-black?

Is there a broader problem with tiff compression? I'm having trouble getting group4 and fax (which I don't normally use) to give me good compression and these are the two compression schemes that were affected by this patch . For example, magick logo: -threshold 80% -alpha off -monochrome -compress ...
by muccigrosso
2018-08-19T11:40:18-07:00
Forum: Users
Topic: How to create a group4 compressed tiff with tiff:photometric: min-is-black?
Replies: 4
Views: 4447

Re: How to create a group4 compressed tiff with tiff:photometric: min-is-black?

Ditto using magick in place of convert on my Mac with

Version: ImageMagick 7.0.8-10 Q16 x86_64 2018-08-18 https://www.imagemagick.org
by muccigrosso
2018-06-10T08:31:25-07:00
Forum: Users
Topic: -shave and aspect ratio
Replies: 5
Views: 4682

Re: -shave and aspect ratio

"preserve-ratio" seems like a useful option to have on the shave command (or someplace similar).