纬纱密度

在织物图像预处理的研究上，本文提出了一种基于Hough变换的图像倾斜纠正与纬纱密度识别算法。

The main contributions of this dissertation include : On the study of fabric image preprocessing , this thesis proposes an algorithm for skew detection and weft yarn density recognition based on Hough transform .

利用倾斜检测结果，本文还提出了一种与倾斜无关的纬纱密度识别算法。

In terms of the previous result , a novel algorithm to identify the weft density is also introduced , which is not affected by the image skew .

最后根据倾斜检测结果，采用一种新的与倾斜无关的纬密识别算法，通过提取倾斜角处的投影轮廓线来得到纬密排列规律，并计算出纬纱密度。

Finally , based upon the skew detection process , a novel algorithm to identifying the weft density is introduced , which is independent of the image skew .

经纱密度大的结构其经向压缩强度也大，同样，纬纱密度大的结构其纬向压缩强度也大；

The structure with bigger warp density behaves higher compression strength in warp direction , the structure with bigger weft density behaves higher compression strength in weft direction also ;

利用聚丙烯纤维对亚麻纱线进行包缠，使用该纱线织造3种经纱密度相同，纬纱密度不同的平纹织物。

Polypropylene filaments were employed to wrap the flax yarn . 3 kinds of plain fabrics were woven with identical warp density and various well density by using the produced yams .

通过对经编双轴向GF/PVC篷盖类柔性复合材料进行的拉伸、撕裂和剥离性能的测试分析，得出了衬经衬纬纱密度与拉伸、撕裂强力之间的关系。

Through the test and analysis on the tensile strength , tear resistance and peeling resistance of bi-axial warp knitted GF / PVC tenting flexible composites , the relationship between the density of inserted warp and weft yarns and the properties of tensile strength and tear resistance are summarized .

本文提出织物紧密指数ψz，综合了织物经、纬纱支，密度，组织和几何结构相的信息，能比较全面地体现影响织物紧密性的各有关因素。

This paper recommends the compactness index of fabric ψ _s , which sums up all the information of warp and weft tex , density , fabric weave and geometric phase , thus more correctly reflecting the action of factors mentioned above .