JPEG Transform

 

PicaView offers a lossless JPEG rotation command which allows you to rotate a JPEG image, or group of JPEG images without decompressing, and recompressing and re-quantizing the JPEG information. This means that no quality is lost in the transformation.

Note: Odd-sized images will be cropped to the nearest multiple of 8 or 16 (in each dimension).

  1. Begin by highlighting one or more JPEG images in the Browser.

Note: JPEG Transform is not available for any other image format. For example, if the images selected include a GIF image then the JPEG Transform option will be disabled.

  1. Select [Tools | JPEG Transform…] and the following dialog will appear:

  1. Choose one of the five rotation options available. Choose the Apply to all option if wanting to apply the transformation to all the images.

  2. Press OK.

Note: If you select more than one image, the Apply to all check box will be available. If you do not select this option then when you press OK, the next image will appear in the Lossless JPEG Transformation dialog and you can select a different rotation for each image. The actual rotations take place as a batch operation after all rotations are specified.