Sattva Descreen plug-in for Adobe Photoshop

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Version history

Version 6.0 Professional edition and Home edition

  • Improved the moire reduction algorithm.
  • Reduced the likelihood of false moiré.
  • Improved measuring the screen frequency and angles.
  • Added Automatic removal of yellow moiré in Home edition.
  • Added Noise reduction in Professional edition.
  • Added tools to visually measure the screen frequency and angles in Professional edition.
  • Ensured compatibility for Macs with Retina displays.
  • Improved compatibility with other graphic editors.

Version 5.3 Professional edition and Home edition

  • Improved compatibility with high-resolution displays.

Version 5.2 Professional edition and Home edition

  • Fixed the bug that causes the appearance of blue squares in the white areas.

Version 5.1 Professional edition and Home edition

  • Improved measuring the screen frequency and the angles.
  • Fixed the bug that causes the artifacts around a selected area.

Version 5.0 Professional edition and Home edition

  • Supports of large images (more than 30 000 x 30 000 pixels) and 32 bits/channel image mode.
  • Extended the frequency search range, thus having the scanning resolution 600 pixels/inch the plug-in will remove a scren of 12...200 lines/inch. The maximum supported scanning resolution is 19200 dpi.
  • Changed the look of the plug-in window, its size can be changed.
  • Changed the way of storing the activation information that is aimed at improving the stability of the plugin.
  • In the Professional edition all the angles, including the angle of yellow paint, are measured automatically. Adjustment Tune removed.
  • In Home edition only one angle is need to be entered, which simplifies work with the plugin.
  • The version of the plug-in for WIndows is compatible with many graphics editors that support Adobe Photoshop plugins.
  • Intoduced a Mac version for Mac OS 10.6-10.7 for Photoshop CS5 64-bit.

Version 4.0 Professional edition and Home edition

  • Starting with version 4.0, the plugin comes in two versions — Professional edition and Home edition. The first is for professional use, especially in prepress. The second is easier to learn and use and is designed for home processing of scanned images. In relation to black and white images the both edition have the same functionality.
  • The noise reduction module was separated to Noise Reduction plug-in (free with Descreen Professional edition, can also be purchased separately).
  • Support 16-bit Grayscale and 48-bit RGB images.
  • Introduced a special adjustment for the sensitivity in the Blue channel (in Professional edition).
  • Increased the size of the preview window.
  • Bugs were fixed, including the bug in module check, preventing re-use an activation key.

Version 3.5

  • Added the ability to reduce the printing of moire in the Blue channel. This allows to obtain more high quality images for offset printing.
  • More complete suppression of the printing of moiré in the Red and Green channels. However, the filter works slower.
  • The order of the angles of CMK cells dialog box now does not matter: a permutation of their positions does not change the result.

Version 3.2

  • A more convenient parameter setting of noise reduction.

Version 3.1

  • Minor improvements of the noise reduction algorithm.

Version 3.0

  • Introduced the noise reduction.
  • Introduced Downsample plugin.

Version 2.3

  • Improved batch processing.
  • The technique of masking allows to obtain better results in the processing of poor quality originals.

Version 2.2

  • Fixed incorrect messages when trying to process images with too low or too high resolution.
  • Fixed a bug with processing two-color images.

Version 2.1

  • Fixed bug with the small system font.

Version 2.0

  • Improved filter performance due to the optimization for modern processors.
  • Added the ability to automatically measure the screen frequency.
  • Introduced halftone moire reduction for the color images.
  • Automatic filtering.
  • Speeded up filtering of the selection.
  • Redesigned interface, including an enlarged preview window, added ability to view any parts of the image, not just the center.

Version 1.5

  • Added the ability to filter the selection.

Version 1.0

  • The first version.