Image Processing Method for Smooth Foam-Fluid Density Transition
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Solution Overview
Problem
Existing image processing methods struggle to render a smooth transition between foams and ordinary fluids, leading to unnatural density changes and poor display effects, especially when fluid splashes occur.
Innovation Solution
An image processing method that acquires a density image and a fluid shape image, blurs the density image based on the fluid shape image, determines transition, fluid, and ordinary regions, and renders these regions to generate a target image, thereby smoothing the density transition and improving the display effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If fluid particle density is directly used to render foam effect, then the rendering process is simple, but the transition between foams and ordinary fluids becomes hard and unnatural
Solution Approach 1:
The patent introduces a foam probability map as an intermediary data structure that stores foam generation probability for each pixel. This map acts as a mediator between the simple density field and the complex foam rendering process, enabling natural transitions by using probability thresholds to determine foam generation while maintaining computational efficiency.
Solution Approach 2:
The patent applies local quality by using the fluid shape image to identify different regions (transition region, fluid region, ordinary region) and applying different rendering strategies to each. The transition region uses foam probability-based rendering for smooth transitions, while other regions use direct density-based rendering, optimizing both visual quality and computational efficiency locally.
2Productivity
If particle density becomes sparse, then the rendering computation is reduced, but large area of foams appear in the center of spray which does not meet expectations
Solution Approach 1:
The patent uses the fluid shape image to identify the transition region where foam generation is expected, and applies foam probability-based rendering only in this region. This local application of complex rendering logic maintains computational efficiency while accurately controlling foam distribution to prevent unrealistic large-area foams in spray centers.
Solution Approach 2:
The patent changes the rendering parameter from direct density values to foam probability values in the transition region. This parameter transformation allows the system to maintain sparse particle densities for computational efficiency while using probability thresholds to control foam generation, preventing unrealistic foam distribution.
3Speed
If density transition is made sharp, then the rendering speed is improved, but the visual effect becomes unnatural and hard
Solution Approach 1:
The foam probability map serves as an intermediary that enables smooth visual transitions without requiring complex real-time calculations. By pre-calculating or efficiently computing foam probabilities and using threshold-based rendering, the system achieves natural-looking transitions at reasonable rendering speeds.
Solution Approach 2:
The patent applies foam probability-based rendering only in the transition region rather than throughout the entire fluid simulation. This partial application of the computationally intensive method maintains rendering speed while achieving visual realism where it matters most - at the boundaries between foam and ordinary fluid regions.
Data Source
AI summary
Embodiments of the present disclosure relate to an image processing method and apparatus, a device and a medium. The method comprises: obtaining a density image and a fluid shape image; blurring the density image on the basis of the fluid shape image to obtain a blurred image; determining a transition area, a fluid area and a normal area in the blurred image on the basis of a preset density threshold range; and rendering the transition area, the fluid area and the normal area to generate a target image.