Digital Lens Simulation via Pixel Transmittance Scaling
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Solution Overview
Problem
The selection of an appropriate color for filters or lenses is challenging due to individual differences in color perception, and existing methods for simulating the appearance of images through lenses are limited in effectiveness.
Innovation Solution
A computer program and display system that simulates how an image appears through a colored filter or lens by modifying pixel brightness values based on the filter's transmittance, allowing users to adjust and compare colors interactively, and suggests standard filter colors for matching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing simulation devices using RGB LEDs or conventional light sources with colored filters are used, then some color simulation capability is achieved, but the simulation accuracy and individualized color perception evaluation are insufficient
Solution Approach 1:
The patent creates a digital copy of the lens filter by scanning its transmittance characteristics and storing them as digital data. This digital model can then be applied to simulate the lens effect on any image without requiring physical test lenses or complex optical setups, thereby improving simulation accuracy while reducing device complexity.
Solution Approach 2:
The patent transforms the physical property of lens transmittance into adjustable digital parameters. By representing lens characteristics as digital transmittance values across different wavelengths, the system can precisely control and adjust color simulation parameters, enabling accurate individualized color perception evaluation.
2Adaptability or versatility
If multiple physical test lenses are provided for evaluation, then users can compare different colors, but the process becomes time-consuming and cumbersome
Solution Approach 1:
Instead of using multiple physical test lenses, the patent creates digital copies of lens transmittance characteristics. Users can instantly switch between different lens types by loading different digital models, enabling rapid comparison of multiple filter colors without the time required to physically change lenses.
Solution Approach 2:
The system transforms the static process of physical lens changing into a dynamic, instantly switchable digital selection. The computer program allows users to dynamically adjust and compare different lens transmittance profiles by simply selecting from stored digital models, making the color comparison process flexible and time-efficient.
3Ease of operation
If digital image processing is used to simulate filter effects, then color simulation can be performed, but accurate representation of individual lens transmittance characteristics is challenging
Solution Approach 1:
The patent performs preliminary characterization of each lens by scanning its actual transmittance characteristics and storing them as digital models before use. This pre-captured accurate data ensures that when the simulation is performed, the precise transmittance profile of each specific lens is applied, maintaining high accuracy while keeping the actual simulation process simple and accessible.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables accurate simulation and selection of lens colors, allowing users to find desired appearances and potentially tint lenses to match standard colors, enhancing the evaluation and application of filter or lens colors.
Implementation Method 1
multiplies the pixel's original red (R), green (G) and blue (B) brightness values each by a fraction which represents the amount of light that the colored filter or lens would allow to pass
Data Source
AI summary
A method for simulating the effect of viewing an image through a colored filter or colored ophthalmic spectacle, contact, intraocular or other lens is described. This method includes using a computer program to alter the red (R), green (G) and blue (B) color brightness of the individual pixels of the original image and then displaying them on the display screen or other visual display device of a computer. Each pixel's original RGB brightness value is multiplied by a fraction, which is determined by the RGB transmission of the colored lens or filter. The altered image is then displayed to a system user who will see the original image, as it would appear if seen through the colored lens or filter.