基于显著算法与CIELAB空间的织物色差评价方法 
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Evaluation Method of Fabric Color Difference Based on Saliency Algorithm and CIELAB Space
武汉纺织大学机械工程与自动化学院, 湖北 武汉 430073
图 & 表
图 1. 基于显著算法与CIELAB空间融合的织物色差评价方法的流程图。(a)织物纹理间隙区域面积和圆度的分析;(b)初步色差分级算法;(c)进一步色差定级算法
Fig. 1. Flow chart of evaluation method of fabric color difference based on saliency algorithm and CIELAB space integration. (a) Analysis of area and roundness of fabric texture clearance region; (b) preliminary color difference classification; (c) further color difference classification
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图 2. 纹理间隙区域的(a)面积与(b)圆度分布
Fig. 2. (a) Area and (b) roundness distribution of texture clearance region
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图 3. 算法的图像处理验证结果。(a)织物图像;(b)织物色差显著图;(c)织物大色差显著二值图;(d)去纹理间隙区域的大色差显著二值图
Fig. 3. Test results of image processing by algorithm. (a) Fabric image; (b) saliency map of fabric color difference; (c) binary image of fabric serious color difference; (d) binary image of fabric serious color difference beyond texture clearance region
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表 1织物色差与色差等级间的关系
Table1. Relationship between fabric color difference and color difference grade
| Colordifference | Colordifferencegrade | Colordifference | Colordifferencegrade |
|---|
| >11.85 | 1 | 2.16-3.05 | 3-4 | | 8.41-11.85 | 1-2 | 1.27-2.15 | 4 | | 5.96-8.40 | 2 | 0.20-1.26 | 4-5 | | 4.21-5.95 | 2-3 | <0.2 | 5 | | 3.06-4.20 | 3 | | |
|
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表 2进一步色差定级的结果
Table2. Result of further color difference classification
| Pixel ratio | Value |
|---|
| Tested hotpink fabric 2 | Tested dodgerblue fabric 2 | Tested violetred fabric 2 |
|---|
| P5 | 1% | 1% | 1.5% | | P4.5 | 36% | 46% | 74.5% | | P4 | 29% | 41% | 24% | | P3.5 | 22% | 12% | 0 | | P3、P2.5、P2、P1.5、P1 | 0 | 0 | 0 | | Weighted sum | 3.96 | 4.18 | 4.38 | | Comprehensivecolor differencegrade | 4 | 4 | 4.5 |
|
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表 3织物的色差定级结果
Table3. Result of fabric color difference classification
| Testedfabric | Proposedmethod | Histogramcrossover algorithm | CIELABcolor space | Colorimeter | Expertevaluation |
|---|
| Tested hot pink fabric 1 | 1 | 2.5 | 3 | 1.5 | 1 | | Tested hot pink fabric 2 | 4 | 4 | 3 | 4.5 | 4 | | Tested dodger blue fabric 1 | 1 | 3.5 | 3.5 | 3 | 1.5 | | Tested dodger blue fabric 2 | 4 | 4 | 4 | 4.5 | 4.5 | | Tested violet red fabric 1 | 1 | 3 | 4.5 | 2 | 2 | | Tested violet red fabric 2 | 4.5 | 4 | 4 | 4.5 | 4.5 | | Mean error | 0.3333 | 0.9167 | 1.4167 | 0.4167 | - | | Variance | 0.1389 | 0.4514 | 0.6181 | 0.2847 | - |
|
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孟秀萍, 苏工兵, 吴奇明, 袁浪佳. 基于显著算法与CIELAB空间的织物色差评价方法[J]. 激光与光电子学进展, 2018, 55(5): 053301. Xiuping Meng, Gongbing Su, Qiming Wu, Langjia Yuan. Evaluation Method of Fabric Color Difference Based on Saliency Algorithm and CIELAB Space[J]. Laser & Optoelectronics Progress, 2018, 55(5): 053301.
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