Method and device for transmitting and receiving broadcast signal on basis of color gamut resampling
US-2017048561-A1 · Feb 16, 2017 · US
Techniques for Encoding, Decoding and Representing High Dynamic Range Images
US2016353123A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016353123-A1 |
| Application number | US-201515110061-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jan 6, 2015 |
| Priority date | Jan 7, 2014 |
| Publication date | Dec 1, 2016 |
| Grant date | — |
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Abstract
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Techniques for high dynamic range image processing are presented. Base layer data, first checksum parameter, and residual ratio data for a high dynamic range (HDR) image are each received. A second checksum parameter is computed for the base layer data based upon the first SOF after the last APP 11 marker segment and includes all following bytes up to and including the EOI marker. The first and second checksum parameters are compared to determine if base layer has been altered.
First claim
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1 - 9 . (canceled) 10 . A method for decoding with edit detection, the method comprising: receiving base layer data for a high dynamic range (HDR) image, the base layer data editable by a legacy image viewer; receiving a first checksum parameter in ASCII representation for the base layer data and embedded in an APP11 marker segment, the first checksum to be utilized by an HDR decoder and ignored by the legacy image viewer; receiving residual ratio data for the HDR image embedded in the APP11 marker segment; for the HDR decoder: computing a second checksum parameter for the base layer data; and comparing the first checksum parameter to the second checksum parameter. 11 . The method of claim 10 further comprising: receiving an encryption parameter in the APP11 marker segment; and utilizing the encryption parameter to decrypt the residual ratio data. 12 . The method of claim 11 wherein utilizing the encryption parameter to decrypt the residual ratio data is performed on a per segment basis. 13 . A method for encoding for edit detection, the method comprising: receiving a high dynamic range (HDR) image; determining base layer data and residual ratio data for the high dynamic range (HDR) image, the base layer data configured to be editable by a legacy image viewer; computing, by the encoder, a checksum parameter for the base layer data; and storing the checksum parameter as ASCII representation in an APP11 marker segment for HDR information, the HDR information ignored by the legacy image viewer. 14 . The method of claim 13 further comprising, storing an encryption parameter in the APP 11 marker segment for decryption of the residual ratio data. 15 . A method for decoding with edit detection, the method comprising: receiving base layer data for a high dynamic range (HDR) image, the base layer data editable by a legacy image viewer; receiving a first checksum parameter for the base layer data embedded in a segment for HDR information, the first checksum to be utilized by an HDR decoder and ignored by the legacy image viewer; receiving residual ratio data for the HDR image embedded in the segment for HDR information; for the HDR decoder: computing a second checksum parameter for the base layer data; and comparing the first checksum parameter to the second checksum parameter.
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Classifications
Providing cryptographic facilities or services · CPC title
- H04N19/44Primary
Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder · CPC title
characterised by the embedded information being invisible, e.g. watermarking · CPC title
the unit being a colour or a chrominance component · CPC title
- H04N19/184Primary
the unit being bits, e.g. of the compressed video stream · CPC title
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- What does patent US2016353123A1 cover?
- Techniques for high dynamic range image processing are presented. Base layer data, first checksum parameter, and residual ratio data for a high dynamic range (HDR) image are each received. A second checksum parameter is computed for the base layer data based upon the first SOF after the last APP 11 marker segment and includes all following bytes up to and including the EOI marker. The first and…
- Who is the assignee on this patent?
- Dolby Laboratories Licensing Corp
- What technology area does this patent fall under?
- Primary CPC classification H04N19/44. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Dec 01 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).