JPEG and LEAD Compressed (JPG, J2K, JP2, CMP, and CMW)

LEADTOOLS reads and writes the following LEAD and JPEG compressed formats:

$image\sqrblit.jpg$ LEAD. This is the LEAD CMP compressed format for grayscale and color images. This format results in smaller files and better image quality than industry-standard formats. In addition, LEAD also supports CMW files, which use Wavelet CMP compression in 8, 12, and 16-bit grayscale and 24-bit color.

$image\sqrblit.jpg$ Progressive LEAD. This is a LEAD format that is useful for transmitting images, because the first part of the file contains the full dimensions of the image. Therefore, in a paint-while-load routine, you can display the whole image, then progressively clarify it as the rest of the file loads. In this format you can read and write 8 or 24 bits per pixel, where 8 is for grayscale and 24 is for color.

$image\sqrblit.jpg$ Lossy JFIF. This is the JPEG File Interchange Format. LEADTOOLS supports YUV 4:4:4, 4:2:2, and 4:1:1 color spacing, and YUV 4:0:0 for grayscale.

$image\sqrblit.jpg$ Lossless JFIF. This is the JPEG File Interchange Format. LEADTOOLS supports 8, 12, and 16-bit grayscale and 24-bit color spacing. Please note that not all applications support Lossless JPEG. Before saving a file using Lossless JPEG, make sure your reader supports it.

Both JPEG 4:4:4 and Lossless JPEG will be recognized when getting file information.

$image\sqrblit.jpg$ Progressive JPEG. This is a JFIF format that is useful for transmitting images, because the first part of the file contains the full dimensions of the image. Therefore, in a paint-while-load routine, you can display the whole image, then progressively clarify it as the rest of the file loads. LEADTOOLS supports YUV 4:4:4, 4:2:2, and 4:1:1 color spacing, and YUV 4:0:0 for grayscale.

$image\sqrblit.jpg$ Lossy JTIF. This is the JPEG Tagged Interchange Format. LEADTOOLS supports YUV 4:4:4, 4:2:2, and 4:1:1 color spacing, and YUV 4:0:0 for grayscale.

$image\sqrblit.jpg$ Lossless JTIF. This is the JPEG Tagged Interchange Format. LEADTOOLS supports 8, 12, and 16-bit grayscale and 24-bit color spacing. Please note that not all applications support Lossless JPEG. Before saving a file using Lossless JPEG, make sure your reader supports it.

Both TIFF JPEG 4:4:4 and Lossless JPEG will be recognized when getting file information.

$image\sqrblit.jpg$ J2K – Lossy or Lossless. This is a JPEG 2000 Format. LEADTOOLS supports 8, 12, and 16-bit grayscale and 24-bit color spacing. The J2K format contains only a stream of image data. Support for this format is only available in the LEADTOOLS JPEG 2000 Plug in. (12 and 16-bit grayscale support is only in Medical toolkits)

$image\sqrblit.jpg$ JP2 – Lossy or Lossless. This is a JPEG 2000 Format. LEADTOOLS supports 8-bit grayscale and 24-bit color spacing. The JP2 format contains a stream of image data, plus extra data about the organization and contents of the file. Support for this format is only available in the LEADTOOLS JPEG 2000 Plug in.

$image\sqrblit.jpg$ TIF J2K – Lossy or Lossless. This is a Tagged Image File with JPEG 2000 Compression. This file format contains only a stream of image data. LEADTOOLS supports 8, 12, and 16-bit grayscale and 24-bit color spacing. Support for this format is only available in the LEADTOOLS JPEG 2000 Plug in. (12 and 16-bit grayscale support is only in Medical toolkits)

For general information, refer to Compression Using LEAD and JPEG Formats.