Convert CALS to JPG

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.

The JPEG (Joint Photographic Experts Group) file extension, abbreviated as JPG, is a widely used format for digital images. Originating from a standard established by the Joint Photographic Experts Group in 1992, it became the go-to choice for compressing photographic images due to its balance of compression and image quality. JPG files are particularly effective for web use, digital photography, and archival storage where color fidelity and small file size are paramount. This format's lossy compression reduces file size by discarding non-essential data, making it efficient for online image sharing and storage.