In the process of designing and analyzing the yarn‐dyed fabric, the yarn color pattern has an important effect on the appearance of the fabric. An automatic color pattern recognition method for yarn‐dyed fabric is proposed in this study. The proposed method uses the fabric images obtained from a high‐resolution digital camera image acquisition system. The local statistical texture features are used for yarn texture segmentation. The yarn color classification problem is then formulated in a research framework of multiregion fuzzy segmentation, which can be added auxiliary variables and solved efficiently by the fast dual projection algorithm. The color values of the yarn crossing points are calculated by the yarn color classification results. The locations of the yarn crossing points are detected by a lightness gradient projection method. Different kinds of fabrics are tested in the experiments. Experiments on 14 actual fabrics show that the approach proposed in this study is effective for classifying yarn color and extracting the yarn color pattern in yarn‐dyed fabric.

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Permethrin is one of the most common active ingredients in mosquito repellents. It is so commonly utilized to spray textiles and clothing repelling insects, in particular, mosquito, in order to avoid the victor-borne disease spreading through human society. In this article, our research team is, at first, to take research on two products, namely, Permethrin-based Mosquito Repellent Spray in aerosol version and water emulsion version respectively provided by Hansk New Materials Holdings Ltd., Hong Kong and identify which one is better anti-mosquito efficacy and longer durability. Then, the research team further prepares the test products: Permethrin-based Mosquito Repellent Sprays for textiles and clothing with three different recipes (with different permethrin content). We conduct experiments and testing to evaluate the functionality of each recipe. We also investigate the anti-mosquito efficacy of the textiles and clothing sprayed with such kinds of permethrin-based Mosquito Repellent Sprays respectively.

Purpose Under extremely cold weather, traditional winter clothing may not be adequate to keep warm in the harsh environment. The paper aims to discuss this issue. Design/methodology/approach Wearable heat-generating (electric heating) clothing which covers the thermal sensitive zone of the human body can protect the human body from hypothermia. Existing heatable jacket in the market using carbon fiber is relatively expensive, complicated and require a lengthy manufacturing time. Findings Through experimental evaluation, the textile treated by plasma-assisted metal coating (PAC) has demonstrated excellent stability in temperature during the heating process. Originality/value This paper introduces an innovative, low-cost PAC technology using optimized plasma-assisted metallic deposition that is able to preserve the physical properties of the textile.

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