Convert OTB to CALS
Convert OTB images to CALS format, edit and optimize images online and free.
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The OTB (Over The Air Bitmap) file extension, developed by Nokia, is used for transmitting black and white bitmap images between mobile phones, particularly Nokia and Siemens models. These images, with a maximum resolution of 255x255 pixels, are often sent via SMS in either hexadecimal text or binary format. Historically, OTB files were popular in the early days of mobile communication for sending simple graphics, icons, and wallpapers when data transmission speeds were limited.
The CALS (Continuous Acquisition and Life-cycle Support) Type 1 Image file format, developed by the United States Department of Defense in the mid-1980s, is a standard for storing raster (bit-mapped) image data, typically black-and-white. It ensures efficient data interchange and retention of orientation metadata. The format supports both uncompressed and compressed (using CCITT Group 4 compression) images. This standard was part of the broader CALS initiative aimed at improving electronic publishing and data management within the federal government.
Select the OTB image you want to process by browsing your computer.
Adjust OTB to CALS settings with tools, then press Convert.
Wait for the converter to finalize, then access your CALS image.
Use Vertopal CLI to process OTB image and export as CALS image.
cd into the OTB file directory or provide the path.