What is ps retouching? What exactly does ps retouching mean?

Retouching refers to retouching pictures of people, still life and scenery. Widely used in photography, design, publishing, e-commerce and other fields. Retouching can usually be divided into the following categories. Character figure modification can better show the wearing effect of clothing on characters and highlight the beauty of clothing through the modification of character figure. With the development of technology, the pixels of cameras are getting higher and higher. When shooting a person, if you use a picture to show the close-up, the defects on this person's skin will be magnified. The texture of the skin can be improved after retouching. Product decoration Product decoration usually refers to the modification of the product's defects and shooting clothes, which makes the product more prominent and enhances the product's texture and impression. Landscape retouching includes landscape retouching. Retouching can make some beautiful scenes or bright colors reappear in the picture. Knowledge of retouching theory, only knowing the operation of software is not qualified for retouching, and retouching must be based on basic theoretical knowledge and guidance. Here will explain the basic knowledge of retouching-the relationship between light and shadow and body aesthetics. The relationship between light and shadow refers to the relationship between light and shadow after light strikes an object. Only when the object changes in light and shade can it present a three-dimensional effect on the plane. The relationship between light and shadow is the most basic element of a painting. Including three major aspects and five major tones. An object will show different light and shade changes after being irradiated by light, and the irradiated area is bright, which is called bright surface; The area on the side is called grey surface; The backlight area is called the dark side. These are three main aspects. The five major tunes are the subdivision of the three major regions. The specific meanings of the five tones are explained in detail below. 1 is the bright surface, that is, the light receiving surface, and the light receiving focus of the light receiving surface is called "highlight". Highlights are usually used to reflect the texture of objects when retouching. The second is the gray surface, which refers to the side area of the object irradiated by light and is the transition area of the dividing line between light and shade. The area is rich in light and shade and rich in layers. The third is the boundary between light and shade. Because of the influence of ambient light, there is no main light source to illuminate, so the contrast is strong. It is usually the hottest area on an object. The fourth is reflection, which refers to the reflection of the reflected light from the environment or objects on the dark part. It is not the darkest area on the whole object, but brighter than the dividing line between light and dark. The fifth is projection. When an object is illuminated by light, it will produce a shadow. Usually, the closer the projection edge is to the object, the clearer it is, and the farther it is from the object, the more blurred it is. Body aesthetics modifies characters to know what is "beauty", so it is necessary to learn the knowledge of body aesthetics of characters. The proportion of the standard human body is 7~7.5 times the height of the head, and the width of the arm is just equal to the height. When measuring the proportion of human body, the head length is generally taken as the unit, such as the neck length is 1/3, the upper limb is 3 and the lower limb is 4. When painting or retouching pictures, the proportion of people's head and body is generally slightly exaggerated, which can make people look more slender and beautiful. The proportion of characters in different postures is different. There is a formula in painting-"Stand seven, sit five boards and three and a half", which refers to the proportional relationship between head and body when people are in different postures. These proportions can be used as a reference for the actual retouching work. In addition to the proportion of human body, the face is also very important in the modification of characters, and one of the key points of facial adjustment is the face shape. The face shape is mainly determined by the bones of the face and skull, and the common faces are as follows. In general, an oval head with a pointed chin or an oval face is beautiful. For men, in addition to oval face and oval face, the Chinese character face is also a good-looking face, which will make men look tougher and more masculine. To measure the beauty and ugliness of a face, in addition to the contour of the face, there is also a very important standard of five senses-three courts and five eyes. Trigonometry refers to dividing the length of the face, that is, the distance from the hairline of the head to the mandible, into three parts, from the hairline to the eyebrows, from the eyebrows to the tip of the nose, and from the tip of the nose to the mandible. Each part is called one point and one * * * three points. Five eyes refers to the width of the face divided into five eyes, the distance between the two eyes is the length of one eye, and the outer corners of the eyes on both sides are the length of one eye. There are also standards for the aesthetics of the five senses. For example, the outer corner of the standard eye is slightly higher than the inner corner, and the inner corner should be opened; When the eyes look up, the radian of the double eyelids is even, and the eyelids can't press the eyelashes; The upper and lower eyelids are naturally connected with the black eyeball; The upper and lower eyelashes are densely curled, and the eyeballs are black and white. The standard eyebrow means that the eyebrow can not be lower than the brow, but only slightly higher or flat; Eyebrow, waist and tail each account for 1/3, and eyebrow peak from brow to eyebrow tail accounts for1/3; From the center of eyebrows to the end of eyebrows, the color of eyebrows is thin and light, the waist of eyebrows is thick and thick, and the end of eyebrows is thin and light. The most important thing about lips is the proportional relationship between upper and lower lips, which is usually 1: 1.5. In a standard lip, the lip shape of the upper lip must have obvious lip peaks and valleys, and the outer contour of the whole upper lip is arched, and the lower lip must have obvious high-gloss lip bead, so as to better reflect the three-dimensional effect of the lip. The two ends of the nose wing of the standard nose should not be too wide, just the same as the width of the inner corner of the eye, that is, the width of one eye; The bridge of the nose should be higher, and the state from the center of the eyebrows to the tip of the nose should be an inverted triangle; The profile of the nose should not be too black, otherwise it will appear black. In addition to the above knowledge, if we can know more about the distribution of bones and muscles and the shape of muscles, we can decorate people more freely.