Mask Region Dilation for Positional Accuracy in Image Projection

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Solution Overview

Problem

Existing image magnification or demagnification processes often result in positional shifts between the input image and the mask image, leading to inaccuracies in achieving the desired on-target shape for users.

Innovation Solution

A display method and computer-readable storage medium that perform dilation or erosion processes on a mask image based on user input, generating a second mask image which is then superimposed on the input image to maintain positional accuracy and allow for precise adjustment of the mask region.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of moving object

If magnification or demagnification process is performed on mask image, then the size of mask region can be adjusted, but positional relationship between input image and mask image becomes shifted

Engineering Contradiction:

Improvemask region sizeVSAvoidpositional accuracy

Core Design Contradiction:

Area of moving objectVSManufacturing precision

Solution Approach 1:

The patent introduces a reference mark as an intermediary element that remains unchanged during magnification/demagnification. The mask image is adjusted relative to this fixed reference point, which acts as a mediator to maintain positional relationship accuracy while allowing size changes of the mask region

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent changes the approach from direct magnification/demagnification of the entire mask image to selective adjustment of mask region size while keeping other parameters (position, reference mark size) constant. This parameter differentiation resolves the contradiction by allowing size change without positional shift

Inventive Principle:

Principle #35Parameter changes

2Manufacturing precision

If mask region size is adjusted to match user sensitivity, then on-target shape can be achieved, but positional shift occurs causing inaccuracy

Engineering Contradiction:

Improveon-target shape accuracyVSAvoidpositional relationship stability

Core Design Contradiction:

Manufacturing precisionVSReliability

Solution Approach 1:

The patent segments the mask image into distinct components: the mask region (which can be adjusted in size) and the reference mark (which remains fixed). This segmentation allows independent control of size adjustment and positional stability, resolving the contradiction between achieving on-target shape and maintaining positional relationship

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS11948482B2Display method and non-transitory computer-readable storage medium storing program

Publication Date: 2024.04.02 SEIKO EPSON CORP

AI summary

The display method includes the steps of receiving input of first information representing an amount of an dilation process or a erosion process on a first mask image including a mask region, generating a second mask image by performing the dilation process or the erosion process corresponding to the first information based on an edge of the mask region on the first mask image, and displaying a projecting image obtained by superimposing the second mask image on an input image.