Title

Image Quality Enhancement

Date

1965

Index Abstract

Not Available

Photo Quality

Complete

Report Number

AMRL TR 65-28

Creator

Brainard, Robert W.

Ornstein, George N.

Corporate Author

North American Aviation Incorporated

Laboratory

Behavioral Sciences Laboratory

Extent

64

Identifier

AD0616895

Access Rights

CFSTI

Distribution Classification

1

Contract

AF 33(616)-7996

DoD Project

7183

DoD Task

718302

DTIC Record Exists

No

Distribution Change Authority Correspondence

None

Distribution Conflict

No

Abstract

A technique for enhancing the quality of imagery was investigated. The technique consists of obtaining a video signal from a transparency and adding to this signal its first and/or second derivative(s). The efficacy of the technique was evaluated by comparing imagery produced by the video signal and its derivative(s) with imagery produced by the video signal alone. The imagery investigated consisted of standard test patterns and aerial photographs. The processed test patterns were quantitatively analyzed to determine the resolution, contrast and acutance of the imagery. The results indicate: (1) differentiation enhances image quality, as indicated by the resolution, contrast and acutance metrics, (2) greatest enhancement is produced by operations which include second-order differentiation, and (3) the least enhancement is produced by first-order differentiation. The aerial photographic imagery shows the same enhancing effects as those obtained with the test patterns.

Report Availability

Full text available

Date Issued

1965-04

Provenance

RAF Centre of Aviation Medicine

Type

report

Format

1 online resource