Image Processing Ray Tracing for Accurate Depth Object Reflections
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Solution Overview
Problem
Existing methods struggle to generate reflected appearances from objects present in the depth direction of an object, leading to incomplete or inaccurate rendering.
Innovation Solution
An image processing system that performs a first depth test using a depth buffer, updates a frame buffer with a flat surface object as a texture, and conducts ray tracing to calculate reflected appearance colors, adding them to the frame buffer pixels, even for objects in the depth direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If conventional reflection processing is performed on drawn images, then the processing can be simplified, but reflected appearances from objects in the depth direction cannot be generated
Solution Approach 1:
The processing is divided into multiple passes: first rendering objects excluding the first type (e.g., characters), then performing depth tests and ray tracing separately, and finally compositing the results. This segmentation allows ray tracing to be applied to objects in the depth direction without interfering with the main rendering pipeline, achieving accurate reflections while maintaining overall system manageability.
Solution Approach 2:
The system performs preliminary rendering of objects excluding the first type, stores their images in a frame buffer, and then uses these pre-rendered images for subsequent ray tracing operations. This preliminary action enables the ray tracing to accurately capture reflected appearances from objects in the depth direction using pre-computed visual information.
2Manufacturing precision
If ray tracing is performed to generate reflected appearances, then rendering accuracy improves, but processing time increases
Solution Approach 1:
The rendering process is segmented into multiple passes where ray tracing is performed only on objects in the depth direction after the main scene is rendered. This selective application of ray tracing reduces the overall processing time compared to performing it on all objects, while still achieving accurate reflections where needed.
Solution Approach 2:
Instead of performing complete ray tracing on all objects, the system applies ray tracing partially only to objects in the depth direction that require reflected appearances. This partial action approach achieves sufficient rendering accuracy for the critical elements while significantly reducing processing time.
3Quantity of substance
If objects are rendered in the depth direction, then scene completeness improves, but reflection visibility deteriorates
Solution Approach 1:
The system performs preliminary rendering of objects in the depth direction, stores their images in the frame buffer, and then uses these pre-computed images for ray tracing. This preliminary action ensures that objects in the depth direction are fully rendered and visible, while their reflected appearances are captured through the ray tracing process using the pre-stored visual information.
Solution Approach 2:
The system creates a copy of the rendered scene in the frame buffer and uses this copy for ray tracing operations. By copying the pre-rendered images of objects in the depth direction into the frame buffer, the system enables ray tracing to accurately capture reflected appearances without re-rendering the entire scene, thus maintaining object completeness while improving reflection visibility.
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 the generation of accurate reflected appearances for objects in the depth direction, enhancing rendering quality without discomfort.
Implementation Method 1
calculating as a ray tracing direction a direction of a ray reflected from the position as a reflection position; tracing the ray along the ray tracing direction
Data Source
AI summary
An image processing system according to an exemplary embodiment renders an object other than a character object in a virtual space in a frame buffer and creates a character flat surface in which an image obtained by rendering the character object in another buffer is set as a texture on a flat surface object. The image processing system performs ray tracing based on an image drawn in the frame buffer, calculates a color of a collision position of a ray and an object other than the character object as a first reflected appearance color, calculates a color of an intersection position of the ray and the character flat surface as a second reflected appearance color, and adds a color based on the results of these calculations to each pixel of the frame buffer.