How is aerial imaging realized?

People's eyes are about 6-7 cm apart. When they look at an object, they see two slightly different images from different angles. The brain synthesizes these two examined images to form a three-dimensional feeling. Generally speaking, stereoscopic image refers to the principle of using the visual difference and optical refraction of human eyes to make people directly see a stereoscopic picture on a plane. The things in the painting can stand out or be hidden in the painting. However, the plan we usually see is an image with the same angle, so vision and brain can't extract the true three-dimensional sense of the objects on the screen and can't reflect their three-dimensional relationship. Stereo images are essentially different from plane images. Stereo images reflect the two-dimensional relationship of objects, and the plane images people see are also three-dimensional. This is mainly reflected in the contrast between light and shadow, reality and light and shade. The real three-dimensional painting is the principle of simulating people's eyes to see the world. It is made by optical refraction, so that the eyes can see the three-dimensional relationship of objects. It is a stereoscopic painting in the true visual sense.

At first, the method of making perfect stereoscopic pictures was to take several approximate images in turn with a multi-lens camera or a single-lens camera and a slide rail, and then to synthesize, print, raster, print and mount the images. This method is complicated in manufacturing process, expensive in pictures and difficult to popularize.

At present, people use advanced digital synthesis technology to make three-dimensional images. They just need to select clear photos or negatives and scan them into the computer. They can directly use professional drawing software to do drawing and digital processing in the computer, print it out with a high-precision color inkjet printer, and then mount it with a cold mounting machine.

Stereo imaging technology can be divided into three categories:

1) binocular stereo imaging technology, the stereo image consists of two images with parallax, and the audience needs to wear auxiliary equipment to watch, such as binocular viewer, red-green (or red-blue) glasses, polarizer glasses, liquid crystal light valve glasses, stereo helmet display and so on. 2) Grating stereoscopic image technology, which consists of more than two images with horizontal parallax, enables viewers to watch stereoscopic images without wearing glasses, and is widely used in multimedia display, advertising display, home decoration, wedding photography, stereoscopic printing and other industries; 3) Laser holographic technology, which requires coherent light to record images, is widely used in holographic anti-counterfeiting trademarks, cards and packaging materials. In addition, there are non-mainstream stereoscopic display technologies such as zoom lens technology, concave mirror (or convex lens) stereoscopic projection technology, light-emitting crystal imaging, smoke screen and water curtain imaging.

Grating stereoscopic pictures are mainly composed of grating plates and sampled pictures. Sampling image is a special image synthesized by sampling more than two parallax images according to certain rules. Grating plate has the function of light splitting, which can separate parallax images, enter people's left and right eyes respectively, and form stereoscopic images through the comprehensive action of the brain. Replacing glasses with grating plate is an autostereoscopic technology, which relieves the audience from the burden of wearing glasses.

Features of stereoscopic images:

A perfect three-dimensional map is composed of two or more layers, which is visually distinct, colorful and has a strong visual impact, making viewers stay in the scene for a long time and leave a deep impression. Cubic painting gives people a real, lifelike and vivid character image and an immersive feeling, which has high artistic appreciation value. The use of three-dimensional image packaging enterprises, so that the corporate image is more distinct, highlighting the strength and grade of enterprises. Increase influence! It can highlight the high quality and high grade of products. You can also make colorful and chiseled three-dimensional wedding dresses and photos, which is one of the latest selling points in the imaging industry.

RealPhoto 3D, using the latest achievements in the field of graphics and images such as pattern recognition, mathematical morphology and three-dimensional image technology, transforms a plane image into a completely real three-dimensional image, which can reproduce the real three-dimensional space of the image. The stereoscopic effect is equivalent to a professional stereoscopic camera with 10 to 30 lenses, and there is no non-parallax interference, which greatly expands the application of stereoscopic images in the advertising field. According to the design requirements, RealPhoto 3D software uses edge enhancement technology to make the edge of each image block smoothly transition in the depth direction, eliminating the flaky feeling, and it is very easy to make portrait stereoscopic film with smooth outline and thick body. Its plane-to-stereo function is equivalent to stereo software shot by stereo camera. RealPhoto3D makes the stereoscopic relationship clearer, the edge transition more natural, and can shoot a picture that is truly comparable to professional stereoscopic photography. The characters are round enough that their limbs can stretch freely in space. This technology is widely used, including stereo photo, three-dimensional decorative painting, three-dimensional computer portrait, three-dimensional printing and three-dimensional advertising design.