Computer evaluation of fabric texture uniformity

For rapid and accurate evaluation of fabric texture uniformity by using computer as a substitute for man,this paper proposes a new computer recognition algorithm based on difference value matrix.By using Gray Difference Value Matrix Model(GDVMM),fabric texture uniformity is analyzed.Fabric image is pretreated to make image more distinct,and image is divided into some segments.Transverse and longitudinal texture characteristic matrix and position matrix are built by detecting fabric weft and warp gray local extreme value.In these matrixes,the element value between each adjacent rows and columns are subtracted one by one.The transverse and longitudinal GDVMM are obtained.With these matrixes,offset mean value and synthetic evaluation formula are proposed to evaluate fabric texture uniformity.Finally,an example is presented and the classification range of evaluation index is given.The result shows that the above method is simple and exact with high speed,and it is effective for evaluating fabric texture uniformity.