LEADTOOLS supports 8, 12, and 16-bit grayscale and 24-bit color spacing. This is the JPEG Tagged Interchange Format. LEADTOOLS supports YUV and CMYK 4:4:4, 4:2:2, and 4:1:1 color spacing, and YUV 4:0:0 for grayscale. Therefore, in a paint-while-load routine, you can display the whole image, then progressively clarify it as the rest of the file loads. 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. Due to inherent limitations of the JPEG algorithm, the only ways to avoid this are: (a) avoid repeated load and resave, or (b) use 4:4:4 format, which has no subsampling. If you have high compression and repeated savings, then the color shift will increase. This will cause a color shift, but the shift is tolerable for low compression ratios. In the case of 411, the color components for 4 pixels are averaged during compression. NOTE: JFIF 4:1:1 and 4:2:2 formats use subsampling for the color components. (12 and 16-bit grayscale images are only supported in the Document and Medical Imaging toolkits.)īoth JPEG 4:4:4 and Lossless JPEG will be recognized when getting file information. Before saving a file using Lossless JPEG, make sure your reader supports it. Please note that not all applications support Lossless JPEG. This is the JPEG File Interchange Format. LEADTOOLS supports YUV, CIELab and CMYK 4:4:4, 4:2:2, and 4:1:1 color spacing, and YUV 4:0:0 for grayscale. In this format you can read and write 8 or 24 bits per pixel, where 8 is for grayscale and 24 is for color. ![]() 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. (12 and 16-bit grayscale images are only supported in the Document and Medical Imaging toolkits.) In addition, LEAD also supports CMW files, which use Wavelet CMP compression in 8, 12, and 16-bit grayscale and 24-bit color. This format results in smaller files and better image quality than industry-standard formats. This is the LEAD CMP compressed format for grayscale and color images. ![]() LEADTOOLS reads and writes the following LEAD and JPEG compressed formats:
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