AJT - Jpegtran for Android

Summary ======= Jpegtran is CUI tool developed by IJG(Independent JPEG Group). This software is Jpegtran ported to Android. Jpegtran can perform the following operations without quality loss. - Rotation in 90 degree units (-rotate) - Make grayscale image (Drop color components) (- grayscale) - Flipping horizontal / verticval / XY axes (-flip, -transpose, -transverse) - Cut out part of image (-crop) - Partial fill of image (-wipe) - Optimization of Huffman table (-optimize) - Conversion to progressive JPEG (-progressive) - Add restart marker (-restart) How to use ========== - Tap [Input]. Since the gallery opens, choose a JPEG image. - Tap [Switch] to select the operation to be performed on the JPEG image. - The output file name automatically generated and displayed to [Output]. If you want to change, tap [Output]. - Press the [Execute] button - When OK is displayed in [Result], processing is finished. By tapping [Result], you can check the result. Crop and Wipe ============= The area of Crop and Wipe can be specified while watching the image. Choose [Switch] -> [Transform] -> [AreaSelector]. An image is displayed and a white line is displayed at the boundary. Drag this white line and specify the area. Image information can be displayed by long tapping. Other operations ============= Press Menu key, or press three dots on title bar, menu will be displayed. - Input selector You can choose to use the gallery to select images or use the built-in file selector. - Default output You can select how to automatically generate filenames. File name appended with "_ajt" in the same directory. Save to specified directory. To long tap [Input], you can check the source JPEG image. Example of operation ==================== Here is an example of the operation to cut out part of an image. - Tap [Input] and select an image - Choose [Switch] -> [Entropy coding] -> [-optimize] You can reduce the file size with this operation. - Select [Switch] -> [Transform] -> [TransformType] -> [Crop] - Select [Switch] -> [Transform] -> [TransformType] -> [AareSelector] As the image is displayed, drag the white frame to make the area of the image. - Tap [Executte] to execute "Jpegtran" - Tap [Result] and check the result image. About this software =================== This software is based on part on the work of the Independent JPEG Group.