Written Text Spatial-Frequency Filtering for Myopia Risk Reduction
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Solution Overview
Problem
Reading and education are recognized risk factors for myopia development, and existing methods to reduce myopia progression, such as blurring peripheral vision with optical filters, do not effectively mimic the natural spatial frequency spectrum of outdoor environments, which is known to inhibit myopia.
Innovation Solution
A computer-implemented method and system that alters the spatial frequency information in text to create a profile resembling natural outdoor environments while preserving informational content, using filters like bandpass or low-pass filters, and adjusting parameters based on font analysis and viewing distance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If text is displayed with standard spatial frequency characteristics, then readability is maintained, but myopia development is promoted due to unnatural spatial frequency spectrum
Solution Approach 1:
The patent applies spatial frequency filtering to transform the spatial frequency spectrum of text, changing parameters such as contrast ratio and spectral distribution to match natural outdoor environments (amplitude=1/fα where α≈-1), thereby reducing myopia risk while preserving readability through controlled modification of spatial frequency characteristics
Solution Approach 2:
The patent copies the spatial frequency characteristics of natural outdoor environments and applies them to text display by analyzing natural image spectra and replicating their frequency distribution patterns (with slope of -1 on log amplitude vs log spatial frequency plot) in processed text, creating an artificial text environment that mimics natural protective characteristics
2Stability of the object's composition
If spatial frequency filtering is applied to text, then natural spatial frequency spectrum is achieved, but text appearance and readability may be affected
Solution Approach 1:
The patent applies different filtering strengths to different spatial frequency bands, using bandpass or narrow band filters that selectively modify specific frequency ranges while preserving others, allowing localized adjustment of spatial frequency characteristics without uniformly altering all text features and maintaining readability
Solution Approach 2:
The patent dynamically adjusts filtering parameters based on font analysis and viewing distance measurements, modifying spatial frequency characteristics in real-time according to specific display conditions, thereby optimizing both natural spectrum matching and readability for each unique viewing scenario
Data Source
AI summary
The invention provides a computer implemented method and system modify the appearance of a readable text, said method comprising the steps of obtaining a data text to be adjusted wherein the data text is representative of a readable text; selecting a filtering model and filtering parameters dependent on an analysis of said data text; applying a spatial transformation to the data text according to the selected filtering model and filtering parameters to generate a modified data text having a different spatial contrast characteristic; and outputting the modified data text as a readable text. The invention provides a method to alter the spatial frequency information in text to create a spatial frequency profile that closely resembles a natural outdoor environment, while at the same time preserving the spatial detail required to retain the informational content of the text.