stereoscopic lens

Optical zoom: Optical zoom occurs when the positions of the lens, object, and focus change. When the imaging surface is moving horizontally, for example, the visual and focal length will change, and the farther scenes will become clearer, making people feel like objects are moving forward. Therefore, changing the focal length of a lens is optical zoom. An optical zoom multiple is the ratio of the maximum fo

(The Nikon lens with a AF-S and the HSM snap can focus automatically on the d40) With the price reduction of digital SLR, many friends want to buy digital SLR, but many people do not know how to choose a camera, in addition, many merchants and professional media intentionally say some words as "professional" to raise the threshold for SLR ", many "heroes and birds" also love to move out some of Nikon's ox heads and Canon's magic mirrors to "educat

Next is the process of moving, rotating, tilting, and shrinking the graphics.-moz-transform:translatex (x deg) Translatey (x deg);/* Graphics move along the XY axis */-moz-transform:rotate (x deg);/* The graph rotates around the origin of course can also be changed to the XY axis */-moz-transform:skew (x deg);/* Graphic tilt */-moz-transform-origin:0% 0%;/* Change the position of the coordinate origin in the graph */-moz-transform:scale ();/* zoom in on a graphic greater than 1 is enlarged, less

., Wade, A. R., Brewer, A. A., May, M. G., Goodman, D. F, Boynton, G. M. M,. MacLeod, D. I. (2003). Long-term deprivation affects visual perception and cortex.Nature Neuroscience,6(9), 915-916.Huber, E., Webster, J. M., Brewer, A. A., MacLeod, D., Wandell, B., Boynton, G. M. M, ... Fine, I. (2015). A Lack of experience-dependent plasticity after more Than a decade of recovered Sight.Psychological Science, 0956797614563957.Ostrovsky, Y., Andalman, A., Sinha, P. (2006). Vision following extende

Camera calibration is a critical problem in computer vision. The brightness of each point in the image captured by the camera reflects the intensity of reflected light at a certain point on the surface of the space object, and the position of the point on the image is related to the geometric position of the corresponding point on the surface of the space object, the relationship between these locations is determined by the camera imaging geometric model. The parameters of this geometric model a

is caused by the fact that the light source is not completely parallel to the projection surface. Trapezoidal deformation with manual to adjust, the error is very big, casually on the difference fraction a millimeter above, therefore, need to rely on the software according to external measurement results, to rectify. The basic idea of implementation is as above. 4. Uneven light source By dividing the first layer model into 40 regions, the intensity values of each region are measured, and each v

Transferred from: Counter @ 2009 Stereoscopic Vision, also known as binocular vision, is used in robotics to detect obstacles and perceive the surrounding environment. Two cameras are used to photograph the same scene. The cameras are separated by a certain distance, just like the human eyes. The imaging of the same object in our eyes is different and there is a certain offset. This amount is called disparity ). That is, d in. D: parallax F: Focal

ArticleDirectory I. Principles of stereoscopic vision and stereoscopic painting Ii. View stereoscopic images 3. Two-Point exercise 4. Another way to watch After work, entertain yourself and see if you can see it right away. Brief Introduction and viewing Methods: What is a three-dimensional image? 3D

-- It's hard to find a hundred changes to the demon. It's really cool !! Hood is not easy to find, the original recommended HK-7 basically belongs to the antique in the antique. Crawling for a long time, finally found a foreign introduction, said can be replaced by HK-4, better than the HK-7, and can be replaced by 85mm 1.4D-IF Hood HN-31, using a 77mm-> 72mm rotor interface is also very good, and the 77mm filter can also be used together. Then there is the use of HN-9 unscrew Hood can also be,

following image: 2, camera internal decomposition camera hardware structure: (1), working principle Light through the lens lens into the inside of the camera, and then through the IR filter to filter the infrared light, finally to sensor (sensors), Senor is divided into according to the material can be divided into CMOS and CCD two kinds, the optical signal can be converted to electrical signal

Macro Mirror 　　 Example of a macro mirror: af-s VR micro-nikkor 105mm f/2.8g if-ed 　　 The macro lens (macro lens) is a special lens for macro photography and has a high magnification of the lens, which is mainly used to shoot very fine objects such as flowers and insects. The so-called

transmission speed of USB interfaces is much higher than that of serial ports and parallel ports, therefore, the current market hotspot is the USB interface digital camera. The following mainly refers to the digital camera with USB interface. How cameras work The working principle of the camera is roughly as follows: the scene is projected to the image sensor surface through an optical image generated by the lens (

Today, photography has become one of the most important functions of mobile phones, and is also the first factor in the cost of acquiring mobile phones. And to some extent, mobile phones have now replaced professional cameras and become the most important photography in our everyday life. Therefore, in the base hardware play to a fever in the future, mobile phone manufacturers are beginning to focus on our attention to the photographic function. "XXX pixel", "XXX sensor", "XXX

The concept of aperture Aperture should be when we contact exposure, to understand the first concept, the number of aperture is very strange, and there is no law, F2.8, F4, F5.6 ... Wait, but the aperture for photography is very important, many professional photographers only rely on the big aperture can move the world, so let us first understand what is aperture. Aperture is the use of light through the lens, into the fuselage of the photographic s

built-in metering table was a very good tool, however, when you make movies and TV series that are relatively cautious about program production, the reflection metering table may cause a deviation in the exposure volume. Although Sony's camera has improved, there are different types of sensitive parts in the digital camera, allowing users to select. Users can select a small block in the center of the screen, which can be the lower half, the upper half or the whole screen for measurement and pro

Tip Animation Effect: Click here to download the source file This time, the motion and the lens. source file from the 04 work "The Ten sides of the ambush," a fighting scene in some cases action and lens it's a lot more than just using one lens to work with each other, and there's some experience to say. See the source file specifically In this whole operation,

Aperture:The English name of the aperture is aperture. the aperture is also called the speed of the lens and the sensitivity of the camera. It is generally expressed in uppercase.It refers to the relative aperture of the lens, not the absolute diameter, so it is easy to misunderstand that the larger the F value, the larger the aperture. In fact, the smaller the value, the larger the aperture.Aperture f = fo

. Increasing the shutter speed will increase the probability of photo clarity. Of course, when a hand-held camera increases the shutter speed, it is bound to open a large aperture and thus lose the "large depth of field". However, to ensure the clarity of the photo, giving up the depth of field is a last resort. Another common mistake is that when the shutter is pressed, the hand is suddenly raised, which produces a very high vibration. It is better to press the shutter and wait until the shooti

Ambient Light)All light in an environment, including sunlight and artificial light sources such as tungsten lamps or fluorescent lamps. It is also called available light. Ambient Metering)A hand-held metering table that measures the light that falls on the shooting object. Angle of View)What the lens sees is included in the viewfinder or LCD screen. Aperture (Aperture)A variable hole in the lens is used to

Preprocessing of video dataThe preprocessing of video data can be divided into three steps such as video lens segmentation, key frame extraction and feature extraction.1. Video lens segmentation (lens boundary detection)Lens segmentation is the first step of video processing and the basis of subsequent video processing