Grayscale Image Correction for Distant Object Visibility
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Solution Overview
Problem
Conventional range finders struggle to display distant objects clearly in grayscale images due to the inverse square law of light reflection, making distant objects appear dark and indistinct.
Innovation Solution
A grayscale image generation device comprising a distance information acquisition unit, a grayscale information acquisition unit, a correction unit, and an image generation unit, which corrects grayscale information based on distance information to enhance the visibility of distant objects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional range finders use plenty of light emission to measure distance and generate grayscale images, then measurement accuracy is improved, but distant objects appear dark in the grayscale image
Solution Approach 1:
The patent applies parameter changes by modifying the grayscale information based on distance parameters. Specifically, it adjusts the grayscale values using distance information to compensate for the inverse square law attenuation, thereby brightening distant objects while maintaining measurement accuracy.
Solution Approach 2:
The patent introduces distance information as an intermediary element that mediates between the light reception signal and the final grayscale image. This distance information is used to correct the grayscale values, effectively bridging the gap between measured distance and visual brightness representation.
2Illumination intensity
If ordinary HDR correction or contrast correction is applied to distant objects, then image brightness is improved, but the specific problem of distance-related attenuation is not resolved
Solution Approach 1:
The patent implements feedback by using the measured distance information to continuously adjust and correct the grayscale values. This creates a closed-loop system where distance measurements inform the correction process, ensuring that the brightness adjustment is directly tied to the actual physical distance and the inverse square law relationship.
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
The device effectively corrects grayscale images to clearly display distant objects by adjusting the grayscale information according to the distance, overcoming the limitations of conventional HDR or contrast correction methods.
Implementation Method 1
the amount of reflection of electromagnetic waves with which the object is irradiated from a lighting device
Implementation Method 2
the amount of reflected light that is detected is inversely proportional to the square of the distance
Data Source
AI summary
A grayscale image generation device (30) comprises a distance information acquisition unit (11), a grayscale information acquisition unit (12), a correction unit (13), and an image generation unit (14). The distance information acquisition unit (11) acquires information about the distance to an object (40) according to the amount of reflection of electromagnetic waves with which the object is irradiated from a lighting device (21). The grayscale information acquisition unit (12) acquires grayscale information according to the amount of reflection of the electromagnetic waves emitted from the lighting device (21) and irradiating the object. The correction unit (13) corrects the grayscale information acquired by the grayscale information acquisition unit (12) on the basis of the distance information acquired by the distance information acquisition unit (11). The image generation unit (14) generates a grayscale image including information about the distance to the object (40) on the basis of the grayscale information corrected by the correction unit (13).