2 bit grayscale what is

The 3s represent white pixels at the beginning of the image. Further down there are some 0s, 1s and 2s representing black, dark gray and light gray:. OK, I have written a Python script following Mark's hints see comments under original question to manually create a 4-level gray scale BMP with 4bpp. This specific BMP format construction is for the 4. The ImageMagick tool identify can look at the colorspace used by files.

If you have convert , then you'll have identify too:. I value ImageMagick in general very much -- but don't trust convert to count the colors correctly with the command you're using May I suggest a different method to discover if a PDF page uses color? It is based on a relatively new Ghostscript device called inkcov you need Ghostscript v9. Insert Link URL:.

Insert Image URL:. Edit Link URL:. What did you think of this page? Appreciate Lospec? Lospec Shop Product. According to the wikipedia-article, those are mandatory if the bit depth is less than 8 bit. Well done on solving the problem.

You could consider also making a personal delegate, or custom delegate, for ImageMagick to help automate the process. ImageMagick is able to delegate formats it cannot process itself to delegates, or helpers, such as your 2-bit helper ;-. Yours would look something like this:. I too have this epaper display. After alot of trial and error, I was able to correctly convert the images using ImageMagick using the following command:. Stack Overflow for Teams — Collaborate and share knowledge with a private group.

Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Asked 5 years, 8 months ago. Active 9 months ago. Viewed 25k times. Further down there are some 0s, 1s and 2s representing black, dark gray and light gray: With the command below, convert pic.

Improve this question. Community Bot 1 1 1 silver badge. What awful program requires you to use 2 bpp? ImageMagick does not support that. Basic Terminology Key Concepts digital images resolution pixel dimensions bit depth dynamic range file size compression file formats additional reading.

Example: In a 2-bit image, there are four possible combinations: 00, 01, 10, and If "00" represents black, and "11" represents white, then "01" equals dark gray and "10" equals light gray.

The bit depth is two, but the number of tones that can be represented is 2 2 or 4.