Image Rendering via Distance Field Sampling for Text Detail Preservation

Solution Overview

Problem

Current methods for rendering text in videos often result in the loss of detail information, particularly for fine lines and tips, leading to a poor text rendering effect.

Innovation Solution

A method that involves obtaining distance field information for image areas defined by sampling points, determining a target image area with a boundary of the object within it, and rendering based on distance field values to preserve detail information.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If conventional text rendering methods are used, then rendering speed is maintained, but detail information of fine lines and tips is lost

Engineering Contradiction:

Improvedetail information preservationVSAvoidrendering efficiency

Core Design Contradiction:

Manufacturing precisionVSProductivity

Solution Approach 1:

The image is divided into multiple image areas, each processed independently with distance field information. This segmentation allows detailed processing of specific regions containing fine lines and tips while maintaining overall rendering efficiency through parallel processing of multiple areas.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different image areas are processed with different levels of detail based on their content. Areas containing fine lines and tips receive enhanced processing using distance field information, while other areas use standard rendering, optimizing both quality and efficiency.

Inventive Principle:

Principle #3Local quality

2Manufacturing precision

If distance field information is used for all image areas, then detail information is preserved, but computational complexity increases

Engineering Contradiction:

Improvetext rendering qualityVSAvoidcomputational complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The image is divided into multiple image areas, each processed independently with distance field information. This segmentation allows detailed processing of specific regions containing fine lines and tips while maintaining overall rendering efficiency through parallel processing of multiple areas.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different image areas are processed with different levels of detail based on their content. Areas containing fine lines and tips receive enhanced processing using distance field information, while other areas use standard rendering, optimizing both quality and efficiency.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS20250005819A1Method, apparatus, device and storage medium for rendering image

Publication Date: 2025.01.02 BEIJING ZITIAO NETWORK TECH CO LTD

AI summary

Embodiments of the disclosure provide a method, apparatus, device and storage medium for rendering an image. The method includes: obtaining respective distance field information of a plurality of image areas in an image of a target object, each image area of the plurality of image areas being defined by a plurality of sampling points, and the distance field information of the image area including respective distance field values and distance field changes of the plurality of sampling points relative to the target object; determining a target image area in the plurality of image areas, a boundary of the target object being located at least partially within the target image area; determining a distance field value of a target point in the target image area relative to the target object; and rendering the target image area on a display interface based on the distance field value of the target point.