Image signal processing apparatus, image signal processing method and program
AssigneeSony Corporation
InventorTetsuro Tanaka
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Abstract
Disclosed herein is an image signal processing apparatus configured to convert an interlaced signal into a progressive signal, including: a first conversion unit; a second conversion unit; a decision unit; and a selection unit.
Claims6
An image signal processing apparatus configured to convert an interlaced signal into a progressive signal, comprising:
- a first conversion unit configured to convert the interlaced signal into a progressive signal by 2·2 pull-down inverse conversion;
- a second conversion unit configured to convert the interlaced signal into a progressive signal by motion adaptive IP conversion;
- a decision unit configured to arithmetically operate a correlation value of two successive field images of the interlaced signal and decide based on the correlation value whether or not the two successive field images originate from a single frame image wherein the number of pixels in a vertical direction is equal to that of the field images;
- and
- a selection unit configured to select a result of the conversion by said first conversion unit or a result of the conversion by said second conversion unit in response to a result of the decision by said decision unit.
An image signal processing method for an image signal processing apparatus configured to convert an interlaced signal into a progressive signal, comprising the steps of:
- converting the interlaced signal into a progressive signal by 2·2 pull-down inverse conversion;
- converting the interlaced signal into a progressive signal by motion adaptive IP conversion;
- arithmetically operating a correlation value of two successive field images of the interlaced signal and deciding based on the correlation value whether or not the two successive field images originate from a single frame image wherein the number of pixels in a vertical direction is equal to that of the field images;
- and
- selecting a result of the first conversion or a result of the second conversion in response to a result of the decision.
A program for converting an interlaced signal into a progressive signal, said program causing a computer to execute a process comprising the steps of:
- converting the interlaced signal into a progressive signal by 2·2 pull-down inverse conversion;
- converting the interlaced signal into a progressive signal by motion adaptive IP conversion;
- arithmetically operating a correlation value of two successive field images of the interlaced signal and deciding based on the correlation value whether or not the two successive field images originate from a single frame image wherein the number of pixels in a vertical direction is equal to that of the field images;
- and
- selecting a result of the first conversion or a result of the second conversion in response to a result of the decision.
Dependencies are inferred from the claim text.