Evaluation method for dimensional stability of washed fabric based on computer vision

According to the existing manual methods to measure dimensional changes of fabric after laundering has an obvious error and low accuracy,especially the fabric with irregular shape,this paper proposes a method based on machine vision to calculating the fabric area change and then evaluate dimension stability of fabric after being washed.Six types of pure wool fabrics are chosen as experimental materials,which will be washed under different washing,rinse,spin procedures before dry and capture the image by machine vision system.The dimensional stability will be evaluated by taking the average dimensional change ratio not only in both warp and weft direction,but also in area before and after laundering,which will be calculated from the fabric images.Compared with the manual measurement,the computer vision method proposed in this paper can represent the dimensional change more globally and accurately,which provides a test basis for fabric design and washing program optimization.