OTA Bitmap

The OTA Bitmap format is a monochrome, uncompressed format using one bit per pixel. As the format was designed for cellular phones, there is no standard computer format. It may be stored as a binary file or as hex (usually without spaces) in a text file. Recognized extension is .otb.

Read more about OTA Bitmap:  Format Copyright, The Data Header, Encoding The Pixels, Putting It Together

Other articles related to "ota bitmap":

OTA Bitmap - Support in Applications - Read/write Support
... ImageMagick XnView (as of version 1.97, Tools → Options → General → Display all image file types flag must be enabled, otherwise XnView will neither display nor save files of this format) Note to review there is no write support for OTA format in XnView. ...