Mariner 6 Photographic Enhancement Example

Author

Preview

Title - Alternative

Mariner 6 Image Processing Sequence

Keywords

Aeronautics, Computer Enhancement, John F. Kennedy Space Center, Mariner 6, Mars, NASA

Photo Description

Example of preliminary computer enhancement of Mariner 6 near-encounter picture 18 of Mars. A portion of this frame, as originally recorded, is shown at the upper left. Apparent in it is a faint "basket-weave" pattern due to electronic "pickup" in the sensitive preamplifier of the camera system, as well as a general "softness" due to the limited resolution of the vidicon image tube. Computer analysis reveals the "pickup" pattern shown at the upper right. When the appropriate numerical value, determined from this pattern, is subtracted from each of the 658,240 elements of the picture, the result is as shown at the lower left. Two further computer programs may then be used to compensate for the smearing due to the vidicon tube, with the result shown at the lower right. The final processing procedure will involve more refined versions of these steps, as well as programs designed to remove the numerous small blemishes, correct for electronic and optical distortions of the image, and correct for the photometric sensitivity of each picture element of the vidicon tube. The computer will also be used to combine the digital and analog video data into a single, photometrically accurate picture.

Publication Date

1969

Format

image/jpeg

Number of Images

2

Side of Image

Front of Image

Publisher

National Aeronautics and Space Administration (NASA)

Original Size

8" x 10"

Identifier

DP0057524-0064a

Photo Credit

National Aeronautics and Space Administration

Location

John C. Hitt Library

Department

Special Collections & University Archives

Collection

Official NASA Photographs, Vol. 1, October 10, 1960 - July 24, 1969

Call Number

SC 010

Digital Production Specifications

Digitized by the University of Central Florida Libraries, Digital Initiatives Unit. Jpeg images were derived from no less than 600 dpi tiffs scanned on a Copibook scanner.

Use and Reproduction

This image is posted publicly for non-profit educational uses, excluding printed publication. For permission to reproduce images and/or for copyright information, contact Special Collections & University Archives, University of Central Florida Libraries, Orlando, FL 32816, (407) 823-2576.

Additional Rights Statement

This photograph is a government publication – not subject to copyright.

Recommended Citation

"Mariner 6 Photographic Enhancement Example" (1969). Official NASA Photographs, Vol. 1, October 10, 1960 - July 24, 1969. 63.
https://stars.library.ucf.edu/nasa-photographs-volume-1/63