hollow pearl 中文意思是什麼
hollow pearl
解釋
空珍珠-
In this paper, the contrast of original image is enhanced by nonlinear transformation based on the characteristics of grain image ; after comparing several methods of threshold segmentation and analyzing their performance and applicability on grain image, the adaptive threshold segmentation based on gradient image is presented ; the noise of binary image is reduced with morphological filter, the hollow in binary image is filled in and a recognition algorithm is designed to remove agglomerate particle ; on the basis of mathematical morphology two methods are adopted to segment agglomerate grains that are not agglomerated tightly ; the parameters of size and shape, perimeter, area, diameter, complexlity, longest feret diameter, shortest feret diameter etc, are extracted. this technique is applied in measurement of pearl powder ' s particle size
本文根據粒度圖像的特點，採用非線性對比度增強處理改善顆粒顯微圖像的對比度；對多種閾值分割方法進行比較，分析了它們的性能和用於粒度圖像的適用性，在此基礎上提出了一種基於梯度圖像的動態閾值分割方法；對獲取的顆粒二值圖像進行形態濾波和空洞填充，設計了識別演算法去除凝聚體；對重疊不太嚴重的粘結顆粒採用了兩種基於數學形態學的分割演算法；提取了周長、面積、粒徑、復雜度、最長feret徑、最短feret徑等大小和形狀特徵參數，對珍珠粉等粉體粒度進行了測量。 -
Each pearl padding is made up by scores of composite hree - dimensional, helix, hollow and silicon - filled fibers and specially processed into individual balls with better elasticity and permeability and longer endurance ; with a little stiffness to meet the special requirements of some products ; similar to pearl in shape ; soft and puffy, slippery hand - feeling, good heat preservation and more comfortable ; can be mixed with down and the ideal substitute for it
每粒珍珠棉，是由幾十根復合三維螺旋捲曲中空加硅纖維，經特殊工藝加工製成小球狀，彈性更好，透氣更強，使用時間更長，並且稍稍有點硬度，可以滿足某些產品的特殊要求；形似珍珠，柔軟蓬鬆，手感滑爽，保暖舒適，可與羽絨混合，是羽絨製品的理想替代材料。
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