CMYK channel modification to optimize optical yarn color mixing effects for multicolored Jacquard artwork reproduction

Abstract

Multicolored Jacquard artwork reproduction has been limited by the current setting of weaving machinery. Novel weaving applications have been introduced to overcome these current restrictions. The subtractive cyan, magenta, yellow and black system used for color printing has been important in optical yarn color mixing of Jacquard color production, because a wide scope of weave color production is possible with a small number of weft yarns. Previously, cyan, magenta, and yellow channels have been modified to resolve current restrictions in reproducing saturated black and secondary colors, but these experiments have not been successful. However, the generation of secondary color ranges is possible by mixing a pair of cyan, magenta, and yellow color yarns. In addition, it is feasible to control chroma levels of primary and secondary colors by mixing with a black yarn. Therefore, the potential of using four weft yarn colors is re-examined for the reproduction of multicolored artworks in relation to cost and production efficiency. Based on a mathematical morphology theory, cyan, magenta, and yellow color channels are altered in the use of image processing tools offered by Adobe Photoshop. A pair of the three color channels is combined under mathematical functions and they are modified through four steps. As a result, new cyan, magenta, and yellow color channels are created to optimize optical yarn color mixing effects. This study introduces details of the cyan, magenta, and yellow channel modification process and experiment results that examine the significance of the newly developed cyan, magenta, and yellow color channels.

Multicoloured Jacquard Artworks Reproduction with C, M, Y, and K Channels Modification to Improve Weave Colour Accuracy

“…As a result, it could not preserve the individual regions sufficiently to reproduction the image. However, the screening effect is successfully maintained the colour regions of primary, secondary and black colour ranges and the artwork reproduction is much more effective than the dodging effect for multi-weave colour reproduction (Kim et al, 2022).…”

“…As a result, the colour segmentation results are dissimilar to cluster the six colours. In the segmentation process, each C, M, and Y layer is obtained by subtracting one-colour arrays of the RGB model and the secondary colours of CMYK colour system (i.e., red, green and blue) are firstly clustered and then the primaries (i.e., cyan, magenta and yellow)(Kim et al, 2022). The formula applied to dodging effect is presented in (1) and the screening effect is in (2) where U g is the upper layer of the grey value, L g is the lower layer.…”