Description

Images from space satellites are often compressed in a lossy manner to ease transmission requirements such as power, error-rate, and data stream size. These requirements differ from standard computer image processing requirements since storage space, processing speed, and power constraints differ between PCs and satellites. To facilitate use of satellite images in applications such as image analysis, dissemination, storage and retrieval, etc., a method is needed to convert images to a widely supported format. Since lossy formats lose information, too many transcodings, poorly performed transcodings, or transcodings between poorly chosen formats will degrade image quality, sometimes making them useless. Images such as military photos and deep space objects require high quality, so it is desirable to avoid or minimize loss during transcodings. NASA has requested software transcoding from the CSSDS Image Data Compression recommendation to JPEG2000 (J2K) with minimal image degradation. In Phase I Cybernet demonstrated mathematically that the wavelets used in the CCSDS format can easily, quickly, and accurately be transformed to the JPEG2000 format. This mathematical proof was implemented in a GUI software tool. For this Phase II proposal, Cybernet Systems Corporation will create a robust, end-to-end solution for transcoding CCSDS images to widely supported formats for dissemination, using mathematical techniques developed during the Phase I. This will be done in four stages. First we will evaluate or implement production level CCSDS, in order to provide users with an easy to integrate, small, fast implementation of this image compression standard. Second, we will create a toolset for optimal conversion to other image formats, including J2K, minimizing transcoding error. Thirdly, since J2K allows a lot of choice for encoding, we will create an optimal J2K encoder tailored for CCSDS images. Finally, we will integrate these toolsets into existing systems as needed.

General Information

• This data is described at

  http://catalog.data.gov/dataset/robust-ccsds-image-data-to-jpeg2k-transcoding-project-c7fe9 Do you think this data is incorrect? Let us know

• This data is published by

  National Aeronautics and Space Administration Do you think this data is incorrect? Let us know

Legal Information

• The rights statement is at

  http://catalog.data.gov/dataset/robust-ccsds-image-data-to-jpeg2k-transcoding-project-c7fe9 Do you think this data is incorrect? Let us know

• Outside the US, this data is available under

  Creative Commons CCZero Do you think this data is incorrect? Let us know

• There are

  yes, and the rights are all held by the same person or organisation Do you think this data is incorrect? Let us know

• The content is available under

  Creative Commons CCZero Do you think this data is incorrect? Let us know

• The rights statement includes data about

  its data licence Do you think this data is incorrect? Let us know

• This data contains

  no data about individuals Do you think this data is incorrect? Let us know

Practical Information

• The data appears in this collection

  http://catalog.data.gov/organization/nasa-gov Do you think this data is incorrect? Let us know

• The accuracy or relevance of this data will

  go out of date but it is timestamped Do you think this data is incorrect? Let us know

• The data is

  backed up offsite Do you think this data is incorrect? Let us know

Technical Information

• This data is published at

  http://techport.nasa.gov/xml-api/6358 Do you think this data is incorrect? Let us know

• This data is

  machine-readable Do you think this data is incorrect? Let us know

• The format of this data is

  a standard open format Do you think this data is incorrect? Let us know

Social Information

• The documentation includes machine-readable data for

  title Do you think this data is incorrect? Let us know

• The documentation includes machine-readable data for

  description Do you think this data is incorrect? Let us know

• The documentation includes machine-readable data for

  identifier Do you think this data is incorrect? Let us know

• The documentation includes machine-readable data for

  landing page Do you think this data is incorrect? Let us know

• The documentation includes machine-readable data for

  publisher Do you think this data is incorrect? Let us know

• The documentation includes machine-readable data for

  keyword(s) or tag(s) Do you think this data is incorrect? Let us know

• The documentation includes machine-readable data for

  distribution(s) Do you think this data is incorrect? Let us know

• The documentation includes machine-readable data for

  release date Do you think this data is incorrect? Let us know

• The documentation includes machine-readable data for

  modification date Do you think this data is incorrect? Let us know

• The documentation includes machine-readable data for

  temporal coverage Do you think this data is incorrect? Let us know

• The documentation includes machine-readable data for

  language Do you think this data is incorrect? Let us know

• The documentation about each distribution includes machine-readable data for

  release date Do you think this data is incorrect? Let us know

• The documentation about each distribution includes machine-readable data for

  a URL to access the data Do you think this data is incorrect? Let us know

• The documentation about each distribution includes machine-readable data for

  a URL to download the dataset Do you think this data is incorrect? Let us know

• The documentation about each distribution includes machine-readable data for

  type of download media Do you think this data is incorrect? Let us know

• Find out how to contact someone about this data at

  http://catalog.data.gov/dataset/robust-ccsds-image-data-to-jpeg2k-transcoding-project-c7fe9 Do you think this data is incorrect? Let us know

• Find out how to suggest improvements to publication at

  http://www.data.gov/issue/?media_url=http://catalog.data.gov/dataset/robust-ccsds-image-data-to-jpeg2k-transcoding-project-c7fe9 Do you think this data is incorrect? Let us know