发动机小直径管X射线底片数字化图像增强技术

Aiming at the problem of image degradation after X-ray film scanning, an improved multi-scale retinex (MSR) enhancement algorithm based on sparrow search is proposed. Taking the digital image of aeroengine small diameter tubes as the research object, the image gradient, frequency domain, and information entropy are employed as the population fitness function of the sparrow search algorithm. Then, realize the adaptive image enhancement is found the optimal values of key parameters in the bilateral filter. Based on the above methods, two kinds of typical actual images are recorded. Compared with limited contrast histogram equalization and traditional MSR processing methods, the proposed method can show defects more clearly on subjective images, and the objective evaluations are improved by at least 10%. The method proposed in this paper can significantly improve the image quality.     

红萝卜西红柿复合蔬菜汁饮料的加工工艺研究

以红萝卜和西红柿为原料,研究复合蔬菜汁饮料的加工工艺条件。结果表明:红萝卜和西红柿的最佳破碎方式均为85℃1 min,果胶酶处理分别为添加量0.14%、50℃酶解50 min和添加量0.10%、50℃酶解40 min,可显著提高红萝卜出汁率和西红柿出汁率(P0.05)。在红萝卜汁与西红柿汁混合比例为1∶3(体积比)、添加6%的白砂糖和0.1%的柠檬酸、添加0.1%黄原胶和0.1%海藻酸钠的复合稳定剂时,可获得具有较好品质的复合蔬菜汁饮料。