Questions tagged [grayscale]
The grayscale tag has no usage guidance.
27
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Convert a PDF to greyscale on the command line *without* bit rasterization
Strongly related to Convert a PDF to greyscale on the command line in FLOSS?
My go-to command has been
gs \
-sDEVICE=pdfwrite \
-dCompatibilityLevel=1.3 \
-dPDFSETTINGS=/printer \
-dBATCH \
-dNOPAUSE \...
- 170
0
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1
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Use ffmpeg to render out only single Y-channel - either alpha or grayscale
I'd like to have a ffmpeg command to save only the alpha-channel. All the commands I tried will save a single channel as RGB - with the same values in all 3 channels.
Some reference -
Want to extract ...
- 291
1
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1
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816
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Windows 10 machine stuck in Greyscale mode
My lovely cat walked across my keyboard and now my Windows user profile is completely stuck in grey-scale mode. I have done all the typical things like disabling Color Filters, and checking Color ...
- 141
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NASA uses a program that takes their black and photos turned into color using a shade of gray for one particular [closed]
I have a a black & photo and I want to convert the shades of gray into individual colors. For example a storm cloud with all different shades of gray, I want to assign a shade of gray to one color ...
- 11
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Compressing Grayscale 8-bit PNG Sequences with ffmpeg
I typically deal with many high-resolution PNG sequences, many of which are RGB (24-bit) or entirely grayscale (8-bit). Because adjacent frames in the sequences are very similar, it is important that ...
- 1,630
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Why do some Microsoft Office drawing objects in PowerPoint print in different grayscale modes?
In PowerPoint 2016*, you can copy groups of Visio objects directly into a presentation, then edit them by right-clicking them and selecting "Edit Picture". A dialog will appear warning that the object ...
- 368
6
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2
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3k
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Automatically turn on grayscale mode in windows 10 [duplicate]
I want grayscale mode to turn on at a specific time every day, then turn off automatically a few hours later. I know ctrl + windows + c can be used to do it manually but it would be great to automate ...
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Windows 10 is grayscale and color filters are off
So I was working on Windows 10, and my screen suddenly went from color to grayscale. I looked it up and all the websites mentioned the color filter and the respective shortcut (Control+Windows+C). ...
- 293
0
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Converting height map to Grayscale
I have a height map that I would like to convert to gray-scale. The problem is I have a custom palette or gradient that I wish to follow and I am not a professional, so I don't really know how.
The ...
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1
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129
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How to deinterlace GRAY video and convert it to .avi?
I have binary data stream from analogue camera that contains even and odd frames.
Right now I convert it to .avi with this,
ffmpeg -f rawvideo -pix_fmt gray -s:v 700x220 -i data.bin -c:v rawvideo -...
- 23
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printer driver prints grayscale fonts as black
Canon iR-ADV 8285/8295 UFR II , Driver version 30.30.0.0
i am tried to print from ms word and ms access , the result is always black.
printing from adobe acrobat is good , and also printing to ...
- 101
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2
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2k
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Windows 8.1 makes one of my displays in grayscale. How can I fix it?
I just re-install windows 8.1 then I've installed Windows8.1-KB2939087-x64, Windows8.1-KB2975061-x64, Windows8.1-KB2919355-x64, Visual C++ Redistributable for Visual Studio 2015 and Google Chrome. At ...
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How to convert a color PDF document to grayscale without messing up black levels?
I've spent a long time figuring this out, tried to print from a bunch of different programs with all the profiles and setting I could find, to no avail.
Situation: I have a multi-page PDF or whatever ...
- 109
3
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1
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3k
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How to convert pdf to grayscale through mutool (mupdf-tools)
I want to convert a pdf to grayscale using mutool. there is an option for grayscale in convert but i don't know how to run it there is no documentation, here is what i am trying to run
$ mutool ...
- 216
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586
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How to calculate bytes needed for a gray scale video
What is the minimum memory (in bytes) for saving five seconds gray scale video with a frame rate of 14 fps in which the dimension of each frame is 480x320? Each pixel in this video requires to be ...
