色纺针织物紧密程度对颜色预测的影响

为优化颜色预测模型,引入织物紧密程度常数,探究色纺针织物紧密程度对颜色预测的影响。采用红和蓝2种色纤维织造不同紧密程度的织物,选用常用的Stearns-Noechel模型为颜色预测模型,求解模型中的待定参数M时,以拟合色差最小时的M值为最优参数,对比引入常数前后的预测结果。结果表明:未引入织物紧密程度常数时,所得到的M值较引入常数后得到的M_p小;当织物组织相同时,随着织物紧密程度逐渐变小,M值变化很小(0.226 5~0.221 6),而M_p值却有逐渐增大的趋势(0.292 1~0.347 1);当弯纱深度一致时,M值随着织物紧密程度的增加,有变大的趋势,但M_p值变化趋势却不明显;引入织物紧密程度常数后,预测平均色差都更小。

Effect of tightness of colored knitted fabrics on color prediction

In order to improve color prediction modeling, this research took fabric tightness into consideration, and then the influence of the tightness of the fiber-colored knitted fabric on the color prediction was studied. Red and blue pre-colored fibers were used to produce knitted fabrics with different tightness. The fabric surface porosity was used to describe the fabric tightness, and Stearns-Noechel model, one of the most commonly used color prediction models, was selected to predict the color of fabrics. When computing the unknown parameter M in the prediction model, the value of M corresponding to the minimum predicted color difference was selected as the optimal parameter. The results show that when the fabric tightness was not added, the M values obtained were smaller than that of the M_p which were computed when the fabric tightness value was added. When the fabric structures were the same and the tightness of the fabric gradually decreased, the M values hardly change (0.226 5-0.221 6), whereas M_p increased gradually (0.292 1-0.347 1). When the sinking depth of yarns was kept constantly, the M values increased as the fabric became tighter, but the changing of M_p is not obvious. It was obvious that the predicted average color difference became smaller after adding the fabric tightness as a constant into calculation of M.