Analysis of the most popular art screening technol

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Analysis of art plus technology

plus technology is the basic way to reproduce continuous tone images, and it is also an important technology to determine the quality of printed matter. It has a history of more than 100 years in the printing field. It has experienced the development stages of glass screen, contact screen, electronic plus, digital plus, and has formed rational plus, irrational plus, super cell structure plus, frequency modulation plus and other technologies. At present, amplitude modulation plus and frequency modulation plus as two major mainstream plus technology has been playing a leading role. With the progress of science and technology, some special plus technology continues to appear, which has been used in some printing fields, reproducing prints with different uses

hybrid addition technology

as we all know, amplitude modulation addition reproduces the image order and level by changing the point size through fixed point spacing, which has obvious advantages for the restoration of image halftone. FM plus reproduces the image order and level by changing the point spacing through fixing the point size, which can restore the details of the image well. Hybrid plus technology is a new plus technology developed by combining the advantages of AM plus and FM plus

hybrid addition is developed on the basis of digital addition principle and computer control technology. Its principle is to generate frequency modulation in the high-key and dark part of the image, so it can also be called "metal material tensile testing machine or metal tensile testing machine" point, and the middle part simulates the configuration of amplitude modulation point, that is, while maintaining a certain number of points, it realizes the step reproduction by changing the size of a single point. Hybrid plus technology makes full use of the advantages of FM plus, while maintaining the good printability of AM points. Therefore, using hybrid plus technology can achieve good image reproduction effect

this kind of point takes the AM point as the skeleton and the FM point as the decoration. The shapes of the points are different, and the positions are slightly randomly distributed, which has the characteristics of both AM and FM points. The advantage of hybrid addition is that there is no point angle and direction problem, the low-frequency components are reduced to reduce the graininess of the picture, and the high-frequency components are reduced to improve the printing stability. Therefore, the printability of mixing point is better than that of AM point and FM point

art plus technology

the basic principle of art plus technology is to replace conventional points with graphics or patterns of various shapes to achieve the purpose of reproducing image levels. The commonly used point shapes in general addition technology are generally circular, oval, diamond or square, and the formation of point shapes is controlled by point functions. According to postscript plus principle, the mathematical model of point function can be adjusted to flexibly control the shape of points, which is the mathematical theoretical basis of art plus technology

art plus is to describe the outline of the figure or pattern as a point according to a certain algorithm, and then use the expansion, reduction or other nonlinear transformation algorithms for the outline to make the contour curve correspond to the gray value of the image one by one, and finally complete 6 with the figure or pattern described by the outline The addition of an electronic load to an image. In the high-profile part of the image, the edge of the point contour is fish shaped; The dark part adopts the reverse point, and the outline of the blank part is goose shaped; While the middle part uses fish shape and wild goose shape to represent the inked part and blank part respectively. Changing the mathematical model of the shape of the control point can change the fish shape and goose shape into other shapes, such as various line patterns, so as to enrich the types of art

art plus technology is most suitable for large outdoor posters and advertising paintings. People can see the overall image effect of the picture from a distance, and can learn the special information contained in the point from a nearby place. In addition, anti-counterfeiting printing is also suitable for art plus, which prints micro text or icons (trademarks) in the image as point shapes. Because the point contour algorithm is unique, such as data editing, it can play a certain anti-counterfeiting role. Replace the anti-counterfeiting image printed after dots with micro text. With the help of a magnifying glass, we can clearly see the hidden in the image, and BASF will put the production base in Asia into the small text in Japan, so as to identify the authenticity

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