visual cone 中文意思是什麼
visual cone
解釋
視覺圓錐角；視錐角-
Rhodopsin is similar in both structure and absorption characteristics to the cone pigments most sensitive to wavelengths in the middle of the visual spectrum, and it evolved from those pigments hundreds of millions of years ago
就構造與吸收光譜特性而言，視紫質與中波長錐色素最為相似；幾億年前，視紫質從這些中波長錐色素演化了出來。 -
Conclusions these findings indicate that cone s motion perception, especially the blue cone s, may reveal pre - clinical visual nerve damage in poag
結論原發性開角型青光眼視錐細胞的視覺運動覺，尤其是藍視錐細胞的視覺運動覺檢查，是反映青光眼早期視功能損害的有效測試指標之一。 -
Color vision in vertebrates begins with the cone cells in the retina, the layer of nerve cells that transmits visual signals to the brain
脊椎動物的色覺始於視網膜里的錐細胞，再透過神經細胞將視覺訊號傳輸到大腦。 -
The more intense a light, the more photons are absorbed by the visual pigments, the greater the excitation of each cone, and the brighter the light appears
光越強，視色素吸收到的光子數目就越多，每個錐細胞的興奮程度也越大，所感受到的光也就越亮。 -
A visual pigment may absorb two wavelengths equally, but even though their photons contain different energies, the cone cannot tell them apart, because they both cause the retinal to change shape and thus trigger the same molecular cascade leading to excitation
同一個視色素可能對兩種不同波長的吸收能力一樣好，但即使這兩種波長的光子能量不同，錐細胞也無法將之區分開來，因為這兩種光都會改變視黃醛的形狀，因而引發同樣的分子事件，造成錐細胞的興奮。 -
In this paper, i will present some algorithms of polyhedral visual hull reconstruction : ( 1 ) polyhedral v isual h ull generation a igorithm b ased one dge - pool - searching, which constrains the 3 - d intersections into the 2 - d planes intersection via the epipolar theory to reduce the complexity a nd c an r educe t he t imes f or c ones t o b e p rejected o nto t he i mage p lanes, i n which we induced the index list to every points on the surface of object, and connected the related points to get sub polygons on surface and in turn get the mesh model, we replace triangulation process of disordered points cloud by edge - pool searching. ; ( 2 ) reconstruction based on degenerated - polygon - intersection, which have the following improvements on traditional bull intersection : using degenerated polygon to orga nize intersected area on cone face, which may be discontinuous ; a fast intersection algorithm of polygons on the cone face based on degenerated polygons, which is consistent between the continuous polygons and the discontinuous ones. the intersection of degenerated polygons is similar to the convergence of two ordered lists, which is comparably simple to the bull operation ; ( 3 ) reconstruction algorithm based on ray - tracing, in which all the rays that run through the vertex on silhouette of object will intersect with all the cones correspondent to other silhouette, and we have to calculate the intersection of all such line segments, the endpoints of which are considered to lie on the surface of object and we will get the point cloud on the surface of object
同時利用共極線原理把三維計算投影到二維平面以降低求交計算的復雜度，該演算法可以減少光錐向圖像平面投影計算的次數，以邊池搜索取代散亂點集上進行的三角剖分； （ 2 ）基於退化多邊形求交的多面體可見殼模型重構，系統引入退化多邊形的概念，把錐體平面的交集中不連通的部分用一個退化多邊形來表示，並引入了新的基於退化多邊形的求交演算法，與傳統多面體可見殼重構相比，該演算法有以下幾點創新：在圖像平面以退化多邊形組織投影錐體和物體輪廓的交集，把任意錐面與物體輪廓的交集歸一到一個退化多邊形；基於退化多邊形的二維平面上多邊形快速相交演算法，該演算法在一定程度上就是兩個有序鏈表的合併，大大簡化了先前的布爾求交計算； （ 3 ）基於光線跟蹤的演算法，該演算法中所有通過輪廓頂點的光線和對應其它圖像輪廓的光錐進行求交計算，最後得到每次求交計算得到線段的交集，該線段的頂點就認為是物體表面點，從而得到物體表面的點雲。
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