Security Camera Block Division Signaling for Efficient Decoding

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Solution Overview

Problem

Existing video compression methods for security cameras result in low-quality images due to limited data transmission and storage conditions, necessitating a high-quality compression method that can store high-quality images with a low data amount.

Innovation Solution

A method and apparatus for transmitting and decoding division information of unit blocks in a bitstream to improve coding efficiency by determining block divisions based on obtained division information.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If image encoding/decoding is performed on the whole image, then processing simplicity is maintained, but coding performance deteriorates

Engineering Contradiction:

Improveprocessing simplicityVSAvoidcoding performance

Core Design Contradiction:

Ease of manufactureVSProductivity

Solution Approach 1:

The patent divides the image into multiple blocks of appropriate sizes for encoding/decoding operations. This segmentation allows the system to maintain processing simplicity while significantly improving coding performance by adapting to the specific characteristics of different image regions, thereby resolving the technical contradiction between ease of processing and coding efficiency.

Inventive Principle:

Principle #1Segmentation

2Manufacturing precision

If high-quality image compression is implemented, then image quality is improved, but data amount increases

Engineering Contradiction:

Improveimage qualityVSAvoiddata amount

Core Design Contradiction:

Manufacturing precisionVSQuantity of substance

Solution Approach 1:

The patent applies different encoding strategies to different blocks based on their specific characteristics. By analyzing and adapting the encoding parameters locally for each block rather than using a uniform approach, the system achieves high-quality compression that maintains image quality while minimizing the overall data amount, thus resolving the contradiction between image quality and data quantity.

Inventive Principle:

Principle #3Local quality

3Measurement precision

If block division information is transmitted explicitly, then decoding accuracy is improved, but bitstream size increases

Engineering Contradiction:

Improvedecoding accuracyVSAvoidbitstream size

Core Design Contradiction:

Measurement precisionVSQuantity of substance

Solution Approach 1:

The patent transmits only the necessary block division information required for accurate decoding, avoiding unnecessary data transmission. By selectively transmitting only the essential division parameters rather than all possible block information, the system achieves sufficient decoding accuracy while minimizing bitstream size, thereby resolving the contradiction between decoding precision and data efficiency.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS12452420B2Method and device for transmitting block division information in image codec for security camera

Publication Date: 2025.10.21 KONINKLIJKE PHILIPS NV

AI summary

The present invention relates to a method and device for transmitting block division information for efficient image coding in a video compression technique for a high-definition security camera. To this end, the present invention obtains block division information from a bitstream, determines the division form of an image by computing and predicting omitted information if there is omitted information in the obtained information, and performs video decoding in the unit of a divided block.