Display Controller Brightness Region Detection

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Solution Overview

Problem

In HDR video production, manually confirming brightness values across multiple high-brightness regions in an image is impractical due to the need for manual position adjustment as the image changes, leading to inefficiency in managing brightness.

Innovation Solution

A display controller and method that detect regions in an image based on brightness distribution, automatically displaying representative brightness values associated with these regions, reducing the need for manual position adjustment and improving efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual position adjustment is used to display brightness values, then the user can control where brightness is displayed, but the operation becomes impractical when images change and multiple regions need monitoring

Engineering Contradiction:

Improvemanual position adjustmentVSAvoidbrightness confirmation efficiency

Core Design Contradiction:

Ease of operationVSProductivity

Solution Approach 1:

The system automatically detects high-brightness regions and positions brightness value displays without user intervention. The brightness value display unit autonomously identifies regions where brightness values should be displayed and updates positions dynamically as images change, eliminating the need for manual adjustment while maintaining operational ease.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The brightness value display unit proactively identifies and prepares brightness value display positions before the user needs to review the image. By detecting high-brightness regions in advance and pre-positioning brightness value displays, the system eliminates the need for manual search and adjustment, significantly improving productivity.

Inventive Principle:

Principle #10Preliminary action

2Extent of automation

If brightness values are displayed at multiple positions automatically, then the system reduces manual adjustment needs, but the complexity of detecting and managing multiple regions increases

Engineering Contradiction:

Improvebrightness value display positioningVSAvoidregion detection and management

Core Design Contradiction:

Extent of automationVSDevice complexity

Solution Approach 1:

The system divides the image into multiple regions based on brightness characteristics, specifically identifying high-brightness regions that require brightness value display. This segmentation allows the brightness value display unit to manage multiple regions independently, simplifying the detection and management complexity while achieving high automation.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system uses brightness threshold parameters to automatically identify high-brightness regions. By changing the detection parameter from manual position specification to brightness value comparison, the system achieves automation while keeping the detection logic simple and manageable through clear parameter-based region differentiation.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS11594198B2Display controller and display control method using brightness distribution of input image

Publication Date: 2023.02.28 CANON KK

AI summary

A display controller includes a processor and a memory storing a program. The program is executed to cause the processor to function as a detecting unit and a control unit. The detecting unit is configured to detect, based on a brightness distribution of an input image, a region satisfying predetermined conditions from the input image. The control unit is configured to display a display image based on the input image and control a value of representative brightness of the region detected by the detecting unit such that the value is displayed in association with the detected region in the displayed image.