English camera parameters
The following are some common English camera parameters and their meanings: 1. ** Metering Mode **: It can be divided into Spot Metering, Matrix Metering, and Center Metering. It is used to adjust the environmental effects and lighting modes according to different environments. 2. ** Iso-Mode **: Iso-level is the sensitivity of the film. The value can be adjusted (automatically or manually according to the environment). The higher the sensitivity, the rougher the film will be. The magnifying effect is average. The light sensitivity will be different at different times (such as early morning, noon, and sunset), so it needs to be adjusted according to the environment. 3. ** Shutter Speed Mode **: S represents Shutter Speed. The shutter speed can be adjusted. The longer the shutter time, the longer the time taken to take a photo. The lower the shutter speed (that is, the longer the shutter is open), the longer the exposure time. It can be used to shoot moving objects. 4. ** SUV Mode **: SUV refers to exposure compensation. When the light is too bright during the day, the photo can be dimmed to prevent excessive exposure from affecting the picture. For every 1.0 increase in the RV exposure value, the light would double. When the photo was too bright, the exposure value would be reduced by 1.0, and the light would be reduced by one. The shutter speed was the exposure time, which was an important factor in the photo. 5. ** AF-mode **: Focus mode, also known as "auto-focus." It was divided into two types, active and passive. The infrared rays sent by the camera tracked objects or people, and the distance of the current object and the subject could be determined. Ordinary mobile phones could achieve these two focus modes. 6. **AWB Mode **: White Balance Mode. Simply put, a piece of white paper will appear in different colors under different light. White Balance will affect the color tone of the entire photo. You can adjust the cool color tone on cloudy days and the warm color tone at sunset. In the parameters related to video shooting: 1. ** RPM (Rate-Picture- Bit)**: Modifies the rate of the captured video. There are two settings, high and low, which determine the clarity of the picture and the file size of the captured video. In monocular camera calibrations, there were: 1. ** Internal Parameters **: 10 camera internal parameters are only related to the camera, including 5 internal matrix parameters K (can be regarded as 4 parameters fx, fy, u0, v0, where fx = f/dx, fy = f/dy, where f is the focal length, dx, dy are the length and width of the point, u0, v0 are the coordinates of the main point in the image coordinate system) and 5 distortion parameters D (k1, k2, k3, p1, p2 are the radius distortion coefficient). 2. ** External parameters **: The relevant parameters from the world coordinate system to the camera coordinate system (used to describe the position of the camera and other information. In the process of camera calibration-related information, the camera's position information and internal parameters are obtained from the spatial points and their corresponding pixel-points). Read more exciting novels for free
The parameters of the camera
There were many parameters for the camera lens. The following were some common parameters: 1. ** Focus **: It determines the degree of zooming of the lens. A longer focal length was used for long-distance shooting. For example, a telephoto lens could be used to shoot long-distance topics such as sports competitions, wild animals, aircraft, etc., and it could also enhance the background blurring effect. A shorter focal length was used for wide-angle shooting, such as wide-angle lenses for landscape photography, architectural photography, and crowded indoor spaces. 2. ** Aperture **: For example, the main camera of the Vivo X200 Pro is equipped with a large aperture of f/1.57, which helps to take brighter and clearer photos in dark environments. Its periscope telephoto lens has an aperture of f/2.67, which can ensure the clarity and details of the picture when shooting telephoto. The size of the aperture affected the amount of light entering, depth of field, and so on. 3. ** Pieces **: It is one of the important indicators to measure the quality of the camera. For example, the main camera of the Vivo X200 Pro is expected to use a 50-million-pel large sensor, and the periscope telephoto lens is equipped with a 200-million-pel periscope telephoto lens. 4. ** Photosensor **: For example, the sensor of the HD - 3000 camera is a LCD; the main camera of the Vivo X200 Pro has a 1/1.28-inch sensor, and the periscope telephoto lens has a 1/1.4-inch base. 5. ** View angle **: For example, the helmet camera lens is a 3.7mm pinhole lens with a 90-degree view angle. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The parameters of the camera
The main parameters of the camera lens were as follows: - Aperture: controls the amount of light that enters the lens. The smaller the aperture, the greater the amount of light that enters the lens, and the more obvious the background blurring effect. For example, in a dark environment, a large aperture could allow more light to enter the camera and take a bright photo. At the same time, it could highlight the subject and blur the background. - ** Focus **: determines the angle of view and magnifying power of the lens. The short focal length lens had a wide angle of view and was suitable for shooting large scenes such as landscapes. The long focal length lens had a narrow angle of view and could zoom in on distant objects. It was often used to shoot portraits, close-ups, or sports events that needed to be zoomed in. - ** Shutter Speed **: The length of time the shutter is opened. A fast shutter speed could freeze instantaneous movements, which was suitable for shooting moving objects, such as fast running athletes. A slow shutter speed could capture the trajectory of the object's movement, such as shooting a smooth effect when shooting water. However, a slow shutter speed needed to be used with a tripod to prevent blurring caused by hand shaking. - [Depth-of-field]: It refers to the range of clear images before and after the focal point. A large aperture would cause the depth of field to become shallow, that is, the clear range before and after the focus was small; a small aperture would cause the depth of field to be large, and the clear range before and after the focus would be wide. - ** Light sensitivity (USB)**: It indicates the sensitivity of the camera to light. The higher the value, the more sensitive the camera was to light. In a dim environment, the camera could increase the brightness by raising the value, but an overly high value would cause noise and affect the image quality. - ** White Balance **: Adjusts the camera to ensure that white objects appear white under different lighting conditions. Automatic white balance (AWB) for daily shooting can basically meet the needs, but it can be manually controlled in special scenes or when you want to change the image effect, such as using the built-in scene mode, manually adjusting the K value, etc. - ** Distortion **: Different types of lenses may have different degrees of distortion. For example, wide-angle lenses may produce barrel distortion, and telephoto lenses may produce pincushion-shaped distortion. This was something to take note of when shooting objects that required strict shapes such as buildings. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
External parameters of the camera
The external parameters of the camera were parameters in the world coordinate system, mainly referring to the rotation and translation matrix between the camera systems, such as the position and rotation direction of the camera. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The precision parameters of the camera
The camera's precision parameters referred to the size of the actual object in one pel, expressed as (um*um)/pel. The size of a picture element was not equal to the precision. The size of a picture element was fixed during the mechanical construction of the camera, while the precision was related to the field of view of the camera and was variable. The smaller the precision value, the higher the precision. The size corresponding to a single pel = width of field of view/width resolution = height of field of view/height resolution; the pel accuracy = pel size/lens magnification; the pel accuracy = camera field of view/camera resolution; the simple evaluation method of the detection accuracy is: Detection accuracy = the actual size of the X-axis of the image/the number of X-axis pixels. However, the final detection accuracy will be affected by many factors, including the moving speed of the object being measured, light interference, the shape of the object, the contrast of the features, the computing power of the software, and so on. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
What are the camera parameters?
The camera shooting parameters included many aspects: 1. ** Picture format and quality **: - There were two types of photo format: RAW and JPG. If post-processing was not needed, the JPG format was fine, as it took up less memory. If post-editing was needed, the RAW format was more suitable, as it saved more original environmental colors, but most of the photos were gray and took up a lot of memory. 2. White Balance: - Automatic White Balance (AWB) could basically meet the needs of daily shooting and restore the true color of the environment. If you want to adjust the environment, you can also adjust the color temperature parameters later. In addition, the lower the white balance value, the colder the image, suitable for shooting night scenes, snow scenes, etc. The higher the value, the warmer the image, suitable for shooting sunrise, sunset, autumn, etc. 3. ** Light sensitivity (USB): - For daily shooting, the sensitivity could be adjusted to "STAR"(Automatic sensitivity). Now the camera had better high-sensitivity and the image quality was less affected. However, it could also be manually adjusted to 100, unless the three elements of exposure needed to be adjusted to a higher IQ or the quality of the photo was not high. When shooting in low-light areas at night without a flash, it was generally necessary to increase the IQ. 4. ** Compensation for exposure **: - In Aperture priority/Shutter priority mode, the setting of "0EV" was generally sufficient for most scenes. In the automatic mode, aperture priority, and shutter priority modes, the exposure compensation was increased when the photo was dark, and decreased when the photo was bright. 5. ** Shooting Mode **: - There were mainly automatic mode, automatic program mode, P-mode, aperture priority, shutter priority, manual exposure, and other modes. 6. ** Metering **: - Most of the time, you can choose to evaluate the light measurement (matrix light measurement, average light measurement). It can measure the entire shooting scene to meet the needs of most scenes. There were also center-focused average dimming (the dimming area was about 1/3 of the middle of the screen) and spot dimming (about 3% - 5% of the screen) to choose from. 7. Focus: - Commonly used focusing modes were single-point autofocus AF-S (suitable for shooting still objects, etc., half press the shutter to focus once), servo-autofocus AF-C (suitable for capturing moving subjects, half press the shutter to maintain tracking focus), smart autofocus AF-A (automatically select AF-S or AF-C, according to the subject's movement or stillness), and manual focus (manually adjust the focus ring, use when autofocus is not available or when there is an error). 8. ** Picture Style **: - There were many settings such as auto, standard, portrait, and landscape. It was recommended for beginners to choose the standard style first, and then choose or set other styles after familiarizing themselves with photography and camera usage. 9. ** Different shooting scene parameters **: - ** Scene (M-file)**: On a sunny day, around 100, F8, 1/200. On a cloudy day, around 400. - ** Aperture priority mode (LV)**: - Scenery photos taken in the light: F8 - F11, exposure compensation 0. - When shooting a portrait, the maximum aperture or the maximum aperture was reduced by one stop, and the exposure compensation was 0. - Street photography: F2.8 or higher (requires virtual environment)-F8 (does not require virtual environment). - For macro photography, F8 - F11. - [Starlight effects: F8 - F11] - For shooting flowers, birds, and insects, the aperture should be at F5.6 or below, and the best was to have an IQ of 400 or less. - ** Shutter priority mode (TV)**: - General body movements: 1/60s or above. - Walking time: 1/125s or more. - [Fast travel: 1/500s and above.] - Running: 1/1000s or above. - Skiing: 1/2000s and above. - [Bike: 1/2000s and above.] - Normal speed of the car: 1/2000s or above. - [Flight distance: 1/500s] - Follow-up photography: 1/60s- 1/4s - [Freezing birds nearby: 1/4000s] - [Fog Sea: 1/4s or slower] - ** Manual Mode (M)**: - Full Moon: 1/500s, Isotta:200, F5.6 - F8(Clear). - Crescent Moon: 1/500s, USB:200, F4 - F5.6(Clear). - [New Moon: 1/500s, USB:400, F4] - Firework: 1s- 4s, USB:200, F8. - [Lightning: B-door, USB:200, F8 (until the end of the shot, the environment should be darker).] - Street light line: 15s, USB:100, F11 (adjusted according to street brightness). - Water surface boat light line: 30s, USB:100, F8 (adjusted according to environmental brightness). - Galaxy: 30s, USB:1600 - 6400, F2.8 (with super wide angle). - Star Orbit Shooting: Each photo was exposed for 30 seconds, and the next photo was taken at an interval of 1 second. At least 120 photos were taken and stacked later. - Flower Shooting: 1/125s, F2.8, USB:100(sunny weather). - Scenery: 1/125s, F4, USB:100(sunny). - Night scene: 1/15s, F1.8, and 200. - Ripping motion: 1/500s, F2.4, USB:100. - Wedding room: 1/125s, F2.8 - F8, Isotta:400. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Hanging camera parameters
Here are some examples of camera parameters: - In the Nordic-style women's hanging photo example, the camera was Canon 5D4, the lens was 50mm f1.8, the aperture was f13, the shutter was 1/100, the USB was 100, the white balance was 5200K, two MCV DP600WII, one 145*250 flag soft light screen, one radar cover, one camera cable, and one Apple computer. However, it should be noted that the lighting environment and the output of the light will be different, and the parameters will be set differently. The main learning method is the lighting method, and the parameters are only for reference. - In an example of a clothing hanging photo, the camera was a Nikon D300, with an aperture of f/7.1, an exposure time of 10/1000, an USB of 200, a focal length of 22.0, and a lens model of AF-S DV VR Zoom-Nikkor 18 - 55mm. The basic settings of the camera for daily shooting will also have a certain impact on the hanging shot. For example, the photo format can be JPG (when not retouching) or RAW (when retouching), the size can be adjusted to large size, and the image quality can be adjusted to high quality (daily); The white balance can be set to "AWB" for daily use, and can be manually adjusted for special scenes or when you want to change the image effect; The sensitivity can be set to "STAR" for daily use, and it will only be manually adjusted when the manual gear (M) is used. The photo style could be selected as "Standard" in daily life; the most commonly used measurement mode was "Evaluation Metering";; the focus mode could be selected as "AF-S + Single Point autofocus" in daily life; and the exposure compensation was generally set to "0EV" in aperture priority/shutter priority mode. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Large camera parameters
Different types of blockbusters (such as movies, landscape blockbusters, portrait blockbusters, etc.) required different camera parameters. The following are some common settings: - ** Picture format, size, and quality **: If you don't need post-editing, you can choose JPG format; if you want post-editing, the RAW format is more suitable. For daily shooting, the size could be adjusted to large size and the picture quality could be adjusted to high quality. However, for shooting news topics, the photo size might need to be adjusted to M or S. - ** White Balance **: Automatic White Balance (AWB) can basically meet the needs of daily shooting. In special scenes or when you want to change the image effect, you can use the built-in scene mode, manually adjust the K value, etc. - ** Light sensitivity (USB)**: For daily shooting, you can set it to the "STAR"(Automatic Light sensitivity). When you use the manual (M), you can manually adjust the light sensitivity to control the image exposure. - ** Picture Style **: The camera has a variety of photo styles. It is recommended to choose the "standard" style for daily shooting unless you have special needs or want to try other styles. - ** Metering Mode **: The most commonly used is evaluation measurement (Nikon Matrix Metering, Sony-called Multi-Metering), which can satisfy most shooting. In complex situations, spot measurement, center-emphasized measurement, etc. may be selected. - ** Focus Mode **: For daily shooting, choose AF-S + single-point autofocus; for shooting moving objects, choose AF-C + extended focus. - ** exposure compensation **: In aperture priority/shutter priority mode, it is usually set to "0EV", which can satisfy most scenes. At the same time, the exposure compensation must be adjusted according to the "white plus black minus" rule. For the Hong Kong Style night scene blockbuster camera, the settings were as follows: the sensitivity was pulled to above 3200 to obtain a high graininess, the aperture was used to 5.6, and the speed was switched between 80 and 100. If the camera could not adjust the K value, it could directly use the white fluorescent light mode (4000K). Combined with the Canon camera's landscape mode, the sharpness was pulled to the full, the contrast was increased by two gears, the saturation was increased by two gears, and the color tone was pulled to the right to the top. Different blockbuster styles also needed to be adjusted and optimized according to the actual shooting environment and the subject. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Single camera parameters
The parameters of a monocular camera included the following aspects: 1. ** Internal camera reference ** - ** Focus **: There are two ways to express it. One is the ratio of the ideal focal length to the camera's cell size.(f/dx f/dy), the ideal focal length in the lens system can pass through the object distance D (the distance from the object to the lens when it is in focus), the focal length of the lens, f, according to the lens formula,(1/f = 1/d + 1/D, d is the image distance, the ideal focal length). If it is not convenient to measure D, you can also measure the value of D/d (find an object with a known length and take the length of the object in the camera image when it is in focus. D/d = the actual length of the object/(the length of the image * the size of the image)), and then combine the above formula and f to find the size of D to obtain the ideal focal length. For ordinary industrial camera lenses, the focal length of the industrial lens could not be directly used to replace the ideal focal length. - ** Center of the camera's image (u0, v0)**: Usually half of the camera's resolution. For example, if the image's size is 800*600, the center of the image is (400,300). - ** Distortion factor (k1k2k3p1p2)**: For ordinary industrial camera lenses, the distortion factor is usually not very large. 2. ** Dimension of the sensor **: For example, a 1/3 inch sensor, the diagonal size is about 1/3 inch = 8.47mm, and the common width and height are about 4.8mm (width) x 3.6mm (height). 3. ** Image resolution **: For example, 1920x1080 (1080p). 4. ** Other parameters related to imaging (will be involved in different scenarios)** - ** The main points involved in monocular ranging (Cx and Cy)**: Because the installation of the imaging device in actual production cannot reach the accuracy of the millimeter level, the optical axis of the lens and the center of the sensor chip are not in the same line, so these two parameters are introduced to correct the hardware offset. - ** The parameters involved in the monocular camera imaging principle **: The monocular camera imaging principle includes the lens imaging principle and the photographic imaging principle. The lens imaging principle involves the focal length f in the small hole imaging model, the intersection point of the optical axis and the imaging plane (the main point), and other concepts. In the actual camera model, it may also involve fx and fy (because a single pel is rectangular instead of square on a low-cost imaging device). <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Combined camera parameters
Here are some common camera parameters: 1. ** Light sensitivity (USB)**: The lower the USB, the clearer the picture and the less noise. For daily shooting, you can set it to the "STAR"(automatic sensitivity), and when it's in the manual (M), you can manually adjust it to control the image exposure. 2. ** White Balance **: Used to obtain the correct color, and can also play a role in rendering. Automatic White Balance (AWB) could basically meet the needs of daily shooting. In special scenes or when you want to change the image effect, you can manually control it, such as using the built-in scene mode, manually adjusting the K value, etc. 3. ** Picture format, size, picture quality **: The photo format can be in the format of RAW or JPG. If you don't want to retouch the picture, you can choose JPG. If you want to retouch the picture, you can choose the format of RAW. For daily shooting, you can adjust the size to large size and the picture quality to high quality. However, when shooting news topics and other things that require fast release, you may have to adjust the photo size to M or S. 4. ** Picture Style **: The camera has a variety of photo styles. It is recommended to choose the "standard" style for daily shooting unless you have special needs or want to try other styles. 5. ** Metering Mode **: There are evaluation measuring modes (Nikon Matrix Metering, Sony Multi-Metering), spot measuring, partial measuring, center-emphasized measuring, etc. The most commonly used is evaluation measuring. 6. ** Focus mode **: Choose AF-S + single-point autofocus for daily shooting and AF-C + extended focus for shooting moving objects. 7. ** exposure compensation **: In aperture priority/shutter priority mode, it is usually set to "0EV". Most scenes can be shot. At the same time, it must follow the "white plus black minus" rule. Different models of cameras might have some specific parameters. For example, some cameras had specific internal parameters to set white balance shift, photo style intensity, precision, threshold, contrast, saturation, color tone, and so on. For example, in the backlit scene, you can set the white balance to K5800, the white balance offset to B2, M3, the photo style to portrait mode, and set the intensity: 5, the precision: 4, the critical value: 3, the contrast: -3, the saturation: +2, the hue: +2, etc. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
What are the camera parameters?
There were many types of camera parameters. The following were some common parameters: 1. ** The voltage is related to the current **: For example, the working voltage and current parameters are not mentioned in the model plx101 high-frequency mobile X-ray camera, but the power supply voltage of the 360 smart camera (1080p version) is 5V, 1A. 2. ** Pixel-related **: For example, a high-definition video camera (AJ-PX800MCF) has 2.01 - 3 million digital pixels. 3. ** Light-sensitive element related **: The light-sensitive element of a high-definition camera (AJ-PX800MCF) is 3MOS. 4. ** Shot-related **: - ** focal length **: For example, the focal length of the compatible lens of the high-definition camera (AJ-PX800MCF) is 1X8.5 - 170mm. - ** Zooming ratio **: The zooming ratio of the supporting lens is 20X. - ** Maximum relative aperture **: 1: 1.8 when 8.5 - 113mm, 1: 2.7 when 170mm. - ** Min object distance (M.O.D)**: 0.9m. - ** Color filter thread **: M82x0.75m. - ** DiameterxLengthx85x180.8mm - ** Weight **: 1.48Kg - [** Attribute **: Internal Focus] 5. ** Basic parameters related to images **: - ** Lowest Illumination **: It is used to measure the camera's ability to see objects in a dark environment. The lower the number, the higher the sensitivity. - ** Wide-motion **: A technology that allows the bright and dark parts of the scene to be clearly displayed. The larger the dynamic range, the more obvious the difference between the brightness and darkness of the scene, and the higher the requirements for the camera. - ** Backlight compensation **: This is used to solve the problem of blackening the main image when there is strong light behind the subject. - ** Strong Light Suppression **: It can weaken the strong light and brighten the dark light, suppressing the problem of large halos and blurred video images caused by strong light. - [** Private Cover **: Can cover certain areas within the monitoring range to protect privacy.] - ** White Balance **: Adjusts the reproduction of white objects by the camera to adapt to different color temperature environments. - ** Electronic Shutter **: The size of the shutter will affect the sharpness of the edges of moving objects and the low-light effect. - [Day and night switching]: It can be divided into electronic and mechanical modes to realize the conversion between color and black and white images. - ** Automatic gain **: It includes digital gain and digital gain. A suitable automatic gain control is very important for the image effect. If not, it may cause the image to be too exposed or too dark. 6. ** Other parameters **: - ** Storage medium **: For example, the storage medium of the high-definition video camera (AJ-PX800MCF) is P2 card/microP2 card (requires an dongle). - ** Screen size **: The screen size of the HD camera (AJ-PX800MCF) is 3.45 inches. - ** sensor size **: The sensor size is 2/3 inches. - ** Operation related **: Like the 360 smart camera (1080P version), it can be operated through the application and supports the Android and IOS-based systems. - ** Storage capacity support **: 360 smart camera (1080P version) supports 1 - 128G Micro SD card. - ** resolution **: 360p smart camera (1080p version) has a resolution of 1080p and a compressed format of H.264. - ** Function **: For example, the 360 smart camera (1080P version) has infrared night vision, remote monitoring, two-way intercom, video sharing, community live broadcast, and other functions. - ** Image color **: 360 smart camera (1080P version) image color is color. - ** Image Device **: The 360 smart camera (1080P version) has an OV2710 image device. - ** Material **: 360 Smart Camcorder (1080P version) made of ABS + PC. - ** Audible/video-related **: Including compression format, etc. For example, the 360 smart camera (1080P version) is compressed in H.264. - ** wireless network support **: 360 smart camera (1080P version) supports IeeE802.11b/g/n wireless protocol. - ** size and weight **: For example, the 360 smart camera (1080P version) has a height of 105mm, a head width of 58mm, a base width of 68mm, a base height of 22.3mm, a thickness of 29.8mm, and a bare weight of 102g. - ** Range of environmental temperature **: The environmental temperature of the 360 Smart Cameras (1080P version) is-4 - 40 ° C. - ** Regarding infrared lights **: 360 smart camera (1080P version) has 9 940mn infrared lights, night vision range of 7 meters. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>