Method and device for designing low-frequency non-separable transform
US-2024373011-A1 · Nov 7, 2024 · US
Imaging decoding apparatus
US9288488B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9288488-B2 |
| Application number | US-201214124576-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 20, 2012 |
| Priority date | Oct 24, 2011 |
| Publication date | Mar 15, 2016 |
| Grant date | Mar 15, 2016 |
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Abstract
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An image decoding device is provided which includes an intra prediction module for reconstructing an intra prediction mode and creating a prediction block of a current block or a sub block, an inverse scanning module for converting residual signals into a quantization block, an inverse quantization module for inversely quantizing the quantization block, and an inverse transform module for inversely-transforming the inversely-quantized block. A quantization parameter predictor for deriving the quantization parameter is created using quantization parameters of a left coding unit and a top coding unit of a current coding unit. Therefore, it is possible to improve image quality by adaptively adjusting a quantization parameter of a current block depending on the size of a coding unit and enhance compression efficiency of an image by effectively encoding/decoding the quantization parameter to reduce the number of bits required for transmitting the quantization parameter.
First claim
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The invention claimed is: 1. An image decoding device comprising: a processor; and a non-transitory computer-readable medium having stored thereon instructions that, when executed, cause the processor to perform a method, the method comprising: reconstructing a prediction mode and creating a prediction block with the reconstructed prediction mode; converting residual signals into a two-dimensional quantization block; inversely quantizing the quantization block using a quan…
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Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US9288488B2 cover?
- An image decoding device is provided which includes an intra prediction module for reconstructing an intra prediction mode and creating a prediction block of a current block or a sub block, an inverse scanning module for converting residual signals into a quantization block, an inverse quantization module for inversely quantizing the quantization block, and an inverse transform module for inver…
- Who is the assignee on this patent?
- Park Shin Ji, Infobridge Pte Ltd
- What technology area does this patent fall under?
- Primary CPC classification H04N19/11. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 15 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).