基於植物學之常春藤生長模擬

The Simulation of Ivy Growth Based on Botany

阮柏翔(Po-Hsiang Juan)

指導教授 ： 施仁忠

國立交通大學/資訊學院/多媒體工程研究所/碩士(2020年)

摘要

在計算機圖學的領域中，已經提出了許多方法來模擬藤蔓植物的生長。這些方法大致上可以被分為兩類：基於互動式的方法和基於程序式的方法。前者是使用者導向的，而後者則是自動生長的機制。這些程序式的方法雖然都會考慮場景中的環境因素，但卻缺乏了該物種的真實植物特性。
我們延伸了舊有的生長模型，並將植物特性整合到其中。我們會先計算整個場景的全域照明，然後將其結果存為光照圖（lightmap）。接著根據常春藤的光補償點和光飽和點，模型會在每個時間點決定更適合的生長路線。而在眾多不同的藤蔓種類中，我們選擇使用常春藤（Hedera Helix），因為它是我們生活中常見的物種。我們的結果能更加反映常春藤在真實環境中的生長情況。

關鍵字

計算機圖學 ； 植物模擬 ； 光補償點 ； 光飽和點

並列摘要

There are plenty of approaches have been proposed to simulate the growth of climbing plants in computer graphics.
These methods can be classified into two categories: interactive-based and procedural-based approaches.
The former is user-guided and the latter is automata.
Among procedural-based methods, they take into account the environmental factors in the scene.
But they do not consider the botanical characteristics of plants.

We extend previous works and integrate the botanical properties into it.
We calculate the global illumination of the entire scene, and then save it as a lightmap.
According to the light compensation point and light saturation point of ivy, the model will choose a better way to grow at each time step.
In a wide variety of climbing plants, we focus on the English ivy (Hedera Helix) because it is an popular species in our life.
Our results can be more authentic in line with realistic situation.

並列關鍵字

Computer Graphics ； Plant Simulation ； Light Compensation Point ； Light Saturation Point

參考文獻

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