Search found 11698 matches

by snibgo
2019-06-15T04:31:09-07:00
Forum: Users
Topic: Can i convert and resize together
Replies: 1
Views: 81

Re: Can i convert and resize together

Yes.
by snibgo
2019-06-14T16:37:29-07:00
Forum: Users
Topic: how to remove vertical and horizontal line in this image
Replies: 5
Views: 398

Re: how to remove vertical and horizontal line in this image

Here is a more accurate result that makes the top and bottom printed lines straight and horizontal, following the method explained in Straightening two lines . First, we create an image that is black in the middle, and blue at the top line and above, and blue at the bottom line and below. The lines ...
by snibgo
2019-06-14T06:05:36-07:00
Forum: Users
Topic: Convert image colorspace to rgb from cmyk without affecting image color contrast or color values
Replies: 9
Views: 341

Re: Convert image colorspace to rgb from cmyk without affecting image color contrast or color values

Do you have sRGB.icc in your current directory?

Did your convert command complete without error? Insert "-verbose" as the first option. What is the text output?
by snibgo
2019-06-14T05:57:53-07:00
Forum: Users
Topic: How should I select specific transparent pixels in tiff file?
Replies: 5
Views: 194

Re: How should I select specific transparent pixels in tiff file?

nischaynamdev wrote: - Create a work path from selection
- Set name of clipping path to 'Path 1'
This is vectorization, conversion of a raster image (pixels) into vectors. IM can't do that. Programs that can include:

Potrace
Autotrace
Inkscape
Gimp
traceContours (by me, unpublished)
by snibgo
2019-06-14T04:15:27-07:00
Forum: Users
Topic: How should I select specific transparent pixels in tiff file?
Replies: 5
Views: 194

Re: How should I select specific transparent pixels in tiff file?

IM cannot create clipping paths.
by snibgo
2019-06-14T03:41:03-07:00
Forum: Users
Topic: How should I select specific transparent pixels in tiff file?
Replies: 5
Views: 194

Re: How should I select specific transparent pixels in tiff file?

What version of IM, on what platform? The top-left pixel is at (0,0), so (1,1) is in the next column and next row. I don't understand what you want. IM doesn't really "select" pixels. Instead, we make a mask image where two colours represent selected or not selected. The mask can then be used to pro...
by snibgo
2019-06-14T03:30:22-07:00
Forum: Users
Topic: how to specify diffferent color in a loop in script
Replies: 9
Views: 2492

Re: how to specify diffferent color in a loop in script

For IM v6, use "convert" instead of "magick".

The command I showed makes a text output. For an image file, change "txt:" to "out.png" or whatever you want.
by snibgo
2019-06-13T16:32:30-07:00
Forum: Users
Topic: Convert svg to png by object ID
Replies: 1
Views: 110

Re: Convert svg to png by object ID

Inkscape can do that (see https://inkscape.org/en/doc/inkscape-man.html#OPTIONS "--export-id"). IM doesn't provide an interface for that.
by snibgo
2019-06-13T11:27:42-07:00
Forum: Bugs
Topic: Problem with Group 4 compression on B&W TIFF
Replies: 10
Views: 496

Re: Problem with Group 4 compression on B&W TIFF

A comparison of Group4, with and without dithering: magick xc:White xc:Black +append -write mpr:BW +delete toes.png -remap mpr:BW -compress Group4 x.tiff magick xc:White xc:Black +append -write mpr:BW +delete toes.png +dither -remap mpr:BW -compress Group4 x2.tiff Filesizes: 13/06/2019 19:19 20,142 ...
by snibgo
2019-06-13T09:18:38-07:00
Forum: Bugs
Topic: Problem with Group 4 compression on B&W TIFF
Replies: 10
Views: 496

Re: Problem with Group 4 compression on B&W TIFF

I should add that these images are converted from 24bit color images to bi-level in Photoshop. From your sample, it seems that the Photoshop conversion has included dithering. If you have a choice, I suggest you try it without dithering. (Dithering reduces the accuracy of individual pixels, and mid...
by snibgo
2019-06-13T08:42:04-07:00
Forum: Users
Topic: invoke the Imagick binary with the following path /usr/bin/convert.....
Replies: 3
Views: 203

Re: invoke the Imagick binary with the following path /usr/bin/convert.....

nigel mcilwaine wrote:... and I would need to edit the path used to invoke the Imagick script ...
Imagick is a different product to ImageMagick. Do you mean Imagick? If so, then you should also install that.
by snibgo
2019-06-13T08:21:41-07:00
Forum: Users
Topic: Convert image colorspace to rgb from cmyk without affecting image color contrast or color values
Replies: 9
Views: 341

Re: Convert image colorspace to rgb from cmyk without affecting image color contrast or color values

Your command did not make that output image from that input image.

For one thing, they are different sizes but your command doesn't resize.

For another, your command makes an sRGB image but your output image is CMYK.
by snibgo
2019-06-13T07:18:12-07:00
Forum: Bugs
Topic: Problem with Group 4 compression on B&W TIFF
Replies: 10
Views: 496

Re: Problem with Group 4 compression on B&W TIFF

For the linked image, "-compress Zip" gives a smaller filesize than the input (uncompressed) or Group4.

For any compression method, there will generally be some images for which the "compression" increases the file size. That's life.
by snibgo
2019-06-13T06:59:59-07:00
Forum: Users
Topic: how to specify diffferent color in a loop in script
Replies: 9
Views: 2492

Re: how to specify diffferent color in a loop in script

But main question remains that changing hue value results in similiar colors when saturation and brightness are fixed . So, also vary the saturation and brightness. For example: magick hald:8 -posterize 4 -unique-colors txt: This gives 64 colours that are evenly distributed in the RGB colour cube (...
by snibgo
2019-06-13T06:48:58-07:00
Forum: Users
Topic: invoke the Imagick binary with the following path /usr/bin/convert.....
Replies: 3
Views: 203

Re: invoke the Imagick binary with the following path /usr/bin/convert.....

I know nothing about NB designer or how to configure it. Why are you using it? Why not simply use ImageMagick from the command line? Does ImageMagick work at the command line? What does "magick -version" say? What does "convert -version" say? What happens when you prefix those commands with "/usr/bi...