Image Processing Apparatus Gloss Texture Contradiction
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Solution Overview
Problem
Existing techniques for adding gloss to objects in images, such as those with fine surface unevenness, often impair the unique texture by making reflected light uniformly specular, leading to a loss of fine fluctuation in intensity and texture detail.
Innovation Solution
An image processing apparatus that acquires shape and reflection characteristics of an object, along with viewpoint and light source information, to emphasize light reflection intensity based on the object's surface shape, increasing emphasis as the shape becomes flatter, thereby enhancing the perceived gloss and texture in image data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a highlight is added to an object to reproduce the texture of a metallic material by setting a light source position for specular reflection, then the gloss of the object is enhanced, but the fine fluctuation in reflected light intensity is lost and the unique texture is impaired
Solution Approach 1:
The patent applies local quality by differentiating the treatment of different surface regions. Flat regions receive enhanced specular reflection to emphasize gloss, while uneven regions preserve their natural fine fluctuations in normal line directions to maintain texture characteristics. This selective application of reflection enhancement based on local surface geometry resolves the contradiction between gloss enhancement and texture preservation.
Solution Approach 2:
The patent changes the parameter of light reflection intensity based on surface shape characteristics. By calculating the degree of flatness from normal line directions and dynamically adjusting the reflection intensity parameter accordingly, the system enhances gloss on flat surfaces while preserving the natural appearance of uneven surfaces, thus resolving the contradiction between enhancing illumination intensity and preserving texture information.
2Illumination intensity
If reflected light beams are made uniformly specular in the highlight portion, then the gloss is enhanced, but the fine fluctuation in intensity is eliminated
Solution Approach 1:
The patent introduces dynamics by making the reflection intensity adaptive rather than static. The system dynamically adjusts the degree of specular reflection based on the calculated flatness of each surface region. This dynamic adjustment allows the system to enhance reflection where appropriate (flat regions) while preserving natural texture variations (uneven regions), resolving the contradiction between enhancing reflection intensity and maintaining texture reproduction quality.
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 apparatus effectively emphasizes the gloss of an object's surface, improving the perception of its texture by adjusting light reflection intensity according to the object's shape, resulting in a more realistic and detailed image representation.
Implementation Method 1
a light source position is set in such a manner that reflected light beams in the range uniformly become specular reflected light
Data Source
AI summary
An image processing apparatus includes: a first acquiring unit configured to acquire shape information indicating a shape of a surface of an object, and reflection characteristic information indicating a reflection characteristic of the object; a second acquiring unit configured to acquire viewpoint information about a viewpoint of viewing the object, and light source information about a light source applying light to the object; an emphasizing unit configured to emphasize a light reflection intensity of the object so as to increase a degree of emphasis as a degree of flatness of the shape increases in image data representing the object, based on the reflection characteristic information, the viewpoint information, the light source information, and the shape information; and an output unit configured to output the image data representing the object having the light reflection intensity is emphasized by the emphasizing unit.