File:SMPTE RP-133.png

Page contents not supported in other languages.
This is a file from the Wikimedia Commons
From Wikipedia, the free encyclopedia

Original file ‎(4,096 × 4,096 pixels, file size: 105 KB, MIME type: image/png)

Summary

Description I (Rich Franzen) digitally built this image around 1987 using the SMPTE RP-133 specification as a base. It was originally used as a test image by the DFR-8000 digital film recorder in the mid-to-late 1980s. Both the recorder and its manufacturer, DBA Systems, Inc. are long gone, although L-3 Communications is the company which bought the company which bought DBA. I was granted permission to use the image freely, and it has appeared on my site since 1998.
It deviates from the RP-133 specification in three respects, all extensions in my opinion. First it contains another RP-133 compliant image within it (sort of as a joke since the main image is so big). Second, it contains a "square snake" encoding of a 4096-level greyscale (possible because the file is a 16-bit greyscale PNG file). Third, it contains some extra text not part of the 1983 SMPTE specification file. Admittedly these extensions mean the image is no longer fully compliant with the SMPTE specification.
Updated to remove 2 bytes of trailing garbage at end of file.
The formal name for the SMPTE specification in question is "SMPTE Medical Diagnostic Imaging Test Pattern".
Date
Source Own work
Author Rich Franzen
Permission
(Reusing this file)
I, the copyright holder of this work, hereby publish it under the following license:
w:en:Creative Commons
attribution share alike
This file is licensed under the Creative Commons Attribution-Share Alike 2.5 Generic license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
Other versions
Image extraction processThis file has an extracted image: SMPTE RP-133 small.png.
lang=en

Captions

Add a one-line explanation of what this file represents

Items portrayed in this file

depicts

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current04:32, 9 January 2007Thumbnail for version as of 04:32, 9 January 20074,096 × 4,096 (105 KB)DozenI (Rich Franzen) digitally built this image around 1987 using the [http://www.smpte.org/engineering_committees/medical.cfm SMPTE RP-133] specification as a base. It was originally used as a test image by the DFR-8000 digital film recorder in the mid-to-l
01:26, 4 January 2007Thumbnail for version as of 01:26, 4 January 20074,096 × 4,096 (105 KB)DozenI (Rich Franzen) digitally built this image around 1987 using the [http://www.smpte.org/engineering_committees/medical.cfm SMPTE RP-133] specification as a base. It was originally used as a test image by the DFR-8000 digital film recorder in the mid-to-l
No pages on the English Wikipedia use this file (pages on other projects are not listed).
Retrieved from "https://en.wikipedia.org/wiki/File:SMPTE_RP-133.png"