Apparatus and method for improved interlace processing

a technology of interlaced motion and apparatus, applied in the field of digital image signal processing, can solve the problems of inefficient encoding, inefficient encoding, inefficient encoding, etc., and achieve the effect of optimizing the compression of motion images and avoiding inefficiencies and inadequacies

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a technology of interlaced motion and apparatus, applied in the field of digital image signal processing, can solve the problems of inefficient encoding, inefficient encoding, inefficient encoding, etc., and achieve the effect of optimizing the compression of motion images and avoiding inefficiencies and inadequacies

US20060002480A1Inactive Publication Date: 2006-01-05QUVIS

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[0026] Referring now to the block diagram of FIG. 1, a computer 100 incorporating an embodiment of an interlaced image processing module 180 constructed in accordance with the present invention is shown.

[0027] The computer 100 includes a CPU 112, memory 114, display device 116, data storage device 118, input / output ports 120 and communications interfaces 122. The CPU 112 is arranged to execute instructions, such as those stored in memory 114, which may be a conventional RAM or any conventional memory for storing instructions for execution by the CPU 112. The display device 116 is conventional, such as a CRT, LCD or LED type display. Various conventional hardware for storing data may be used for the data storage device 118, such as a hard disk, or a tape drive. The input-output ports 120 are also conventional, and can be arranged to input and output video signals, such as interlaced motion image signals (e.g., NTSC broadcast television format). Although it is understood that the com...

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Abstract

An interlaced image processing module and corresponding method facilitate improved processing of interlaced motion images. In one embodiment, the interlaced image processing module receives image data frames having interlaced first and second fields and produces a reference field and error field. The reference field corresponds to the still image content of the interlaced frame, whereas the error field corresponds to the motion content of the interlaced frame, particularly the motion between fields. Motion between fields is thus represented in the error field, without redundant representation of the still image content provided by the first field. Where there is little motion between fields, the error terms will be small so the predictor preserves the coding efficiency provided by any auto-correlation in the image. Further, the interlaced image processing method does not rely upon pixel group classification, and thus avoids classification errors, and the loss of coding efficiency from still image content in motion classified blocks. Finally, problems presented by relative motion between fields are avoided, as are local artifacts. Another embodiment transforms the interlaced fields into frame data having a high frequency field and a low frequency field.

Description

CROSS REFERENCE TO RELATED APPLICATIONS [0001] This application is a continuation of application Ser. No. 10 / 139,532 filed on May 6, 2002; which in turn is a continuation of application Ser. No. 09 / 943,454, filed Aug. 30, 2001; which in turn is a continuation of application Ser. No. 09 / 696,757, filed Oct. 25, 2000; which in turn is a continuation-in-part of our prior application Ser. No. 09 / 023,636, filed Feb. 13, 1998. The disclosures of these related applications are hereby incorporated herein by reference.TECHNICAL FIELD AND BACKGROUND ART [0002] This application relates generally to digital image signal processing, and more particularly to the compression of interlaced motion images. DESCRIPTION OF THE RELATED ART [0003] Image and motion image signals are increasingly being processed in the digital domain. One set of problems encountered in digital image signal processing result from signal formats used in conventional analog video processing. For example, certain formats, parti...

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Application Information

Patent Timeline

05 Jan 2006

Publication

US20060002480A1

IPC: H04B1/66; G06T9/00

CPC: H04N19/16; G06T9/004

Inventors: GOERTZEN, KENBE D.