Converting an image in 8-bit grayscale RAW image in java

Question

Please let me know how to convert a JPG/PNG/BMP image into a 8-bit grayscale RAW image in Java. Is it possible to obtain using ImageIO API?

Answer 1

You will find an example here

Answer 2

You can convert an image to 8-bit grayscale using ColorConvertOp with a BufferedImage.TYPE_BYTE_GRAY as the filter() destination. Here's an example.

RAW is actually a family of vendor-defined image formats, many of which can be read with jrawio. Once converted, you might be able to write with ExifTool.