CBM image file format: what is it? how to read it?

Question

I have a collection of images in the CBM file format. What is this format? How to read it? How to convert it to, say, a BMP bitmap?

Searching the net, I found that it could mean one of those three things:

1) Fuzzy Bitmap, as per Michael Mauldin's library, FBM (1989). The softwares XnView and Graphics Convert Pro 2011 should be able to open it, but they don't. Most likely it means that the file I have is not really a Fuzzy Bitmap.

2) Compiled bitmap, as per XLib (wikipedia) How to proceed in order to test that my file is such a Compiled Bitmap? Where to download XLib / what should I build?

3) Compressed Bitmap. Do you have more info's on this format?

How old are the files? What platform were they made on? Who made them? What are they images of? — Wilbur Vandrsmith, Nov 24 '11 at 06:07
Notes about the [CBM file extension](http://filext.com/file-extension/CBM) — Alvin K., Nov 25 '11 at 05:45

score 3 · Accepted Answer · answered Nov 24 '11 at 21:27

I found CreateDIBitmap function. If you pass correct parameters, you should be able to save it into some more known file format.

Here you can find something about Bitmap Compression.

If you don't know image details like resolution, bitsperpixel, compression type,... It will be hard to read it.

score 0 · Answer 2 · answered Nov 14 '11 at 21:12

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I believe CBMs are just Zip files renamed. Try renaming and unzipping.

answered Nov 14 '11 at 21:12

James Tomasino

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score 0 · Answer 3 · answered Nov 16 '11 at 10:14

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try to open it with konvertor (www.konvertor.net); it does read several CBMs formats

answered Nov 16 '11 at 10:14

xila

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Konvertor creates a white image with some black ASCII characters in it. Confusing. – Hugues Fontenelle Nov 16 '11 at 14:37

CBM image file format: what is it? how to read it?

3 Answers3