Copyright NOTICE: This article for Bo Master original article, without Bo Master permission not reproduced.ObjectiveMainly used for color integer, RGB array, 16 binary conversion (-12590395 #3FE2C5 [63,226,197])No need for temporaryCode AnalysisThe value of the int type value of color goes to 16 binary type values includes two scenarios:Scenario One: Thinking: Calculate the value of the 16777215 and then get a 16 binary value from the string. /** C
HSV (hue, saturation, value) is a color space created by a.r. Smith in 1978, also known as the hexcone model ). The color parameters in this model are: tone (H), saturation (s), and brightness (V ).
HSV Color Space Model[1]Tone H: used for angle measurement. value range: 0 ° ~ 360 °. Start from the red color and start from the counter-clockwise direction. The red color is 0 °, the green color is 120 °, and the blue color is 240 °. Their complementary colors are: yellow is 60 °, blue is 180 °, a
About RGB, yuy2, yuyv, yvyu, uyvy, and ayuv]
Common RGB/YUV formats in DirectShow
Source: http://hqtech.nease.netAuthor: Lu Qiming
Knowledge: RGB and YUV ---- From DirectShow practices by Lu Qiming
The color display principle of the Computer Color Display is the same as that of the color TV, which adopts the principle of adding and Mixing colors of R (red), g (gr
sensor signal Output YUV, RGB, RAW DATA, JPEG 4 different waysCategory: Camera 2012-12-17 08:59 10085 people read reviews (5) Favorite reports
In simple terms,Yuv:luma (Y) + chroma (UV) format, typically sensor supports YUV422 format, that is, the data format is output in y-u-y-v orderRGB: Traditional red-green-blue format, such as RGB565, whose 16-bit data format is 5-bit R + 6-bit G + 5-bit B. G more than one, because the human eye is more sensitive
First, the basisFor color to grayscale, there is a well-known psychological formula:
Gray = r*0.299 + g*0.587 + b*0.114
Second, integer algorithm
In practical application, we want to avoid low speed floating-point operation, so we need integer algorithm.Note that the coefficients are all 3-bit precision, we can scale them 1000 times times to implement the integer arithmetic:
Gray = (r*299 + g*587 + b*114 + 500)/1000
RGB is generally 8-bit precision, n
At present, the general color LCD connection mode has so many: MCU mode, RGB mode, SPI mode, VSync mode, Mddi mode and so on.
=========================================================================================
First, the hardware interface
MCU mode: currently the most commonly used connection mode, usually 80 system (68 system no longer exists). Data bits are transmitted in 8-bit, 9-bit, 16-bit, and 18-bit. The connection is divided into: cs/,rs
Framebuffer/pixel depth/color depth/RGB565
1, framebuffer related.
Framebuffer's variable information refers to the length, width, and color depth of the framebuffer. The two command words are related to two structures: struct fb_fix_screeninfo and struct fb_var_screeninfo, both of which are relatively large, which are used to preserve the fixed information of the framebuffer device, The latter is used to save variable information for framebuffer devices. These two structures are used when cal
Rgb:
Red-green-blue (RGB) is the base color that the computer displays, and the RGB565-supported color depth can be programmed up to 16 bits per pixel,
namely RGB565 (red 5 bit, green 6 bit, blue 5 bit).
Yuv:
Video Codec features
Video encoder requires yuv4:2:0 format video input, so may be based on the application of video input preprocessing, that is, yuv4:2:2 interlaced scanning (such as from the ca
The first to learn to do the Web page, it is not careful to use the CMYK model of the picture, and then open in the browser is x, and then find a long time to know the original page to use RGB mode, now we have to simple Photoshop grayscale, index, RGB, CMYK four mode.
Grayscale mode : Simple point that grayscale mode is like Black-and-white photos, all colors are in different 256 shades of gray (so in g
1 Preface
The color of nature is ever changing. In order to give color a quantitative measurement standard, we need to establish a color space model to describe various colors, as human perception of color is a complex process of combination of physiological and psychological effects, in order to better and more accurately meet their needs in different application fields, there are various color space models to quantify the color description. We often see RG
The color display principle of Computer Color Display is the same as that of color TV sets. The principle of adding and Mixing colors of R (red), g (green), and B (blue) is used: three electron beam with different intensity are emitted to make the red, green, and blue phosphor materials on the inside of the screen emit light and produce color. This color representation method is called RGB Color Space Representation (it is also the most commonly used
The color display principle of Computer Color Display is the same as that of color TV sets. The principle of adding and Mixing colors of R (red), g (green), and B (blue) is used: three electron beam with different intensity are emitted to make the red, green, and blue phosphor materials on the inside of the screen emit light and produce color. This color representation method is called RGB Color Space Representation (it is also the most commonly used
HSV space: H (Hue)--s (saturation)--v (brightness)Similar to the HSI color space: H (Hue)--s (saturation)--I. (intensity)Attention:Intensity and brightness are almost a concept.Saturation represents the amount of light that penetrates into the white light, the more white light, the smaller the saturation, the less white light, the greater the saturation, the greater the purity of the color.Here's the code:Rgb2hsv.mfunction [H,s,v] = RGB2HSV (r,g,b)%RGB2HSV convert red-green-blue colors to hue-sa
For many years, for most people, there are three kinds of knowledge about graphic signals: RF signal, composite video signal,S video signal . The RF signal is modulated by the composite video signal to the high frequency, the antenna input signal of the ordinary TV is used for the RF signal, the input of the composite video signal is the RGA terminal. As our most common audio interface, the input of the S video signal is a four-wire terminal. Commonly known as the S-terminal. In the definition,
() functionLine such as "abc" = = "abc" "ABC" ==> "ABC"Answer: String.prototype.trim=function(){ var result=this.replace(/^\s+|\s+$/g,""); return result; }(4) Implement a function to determine if it is the correct email addressThe problem is the use of Kauzheng expression, email address such as [email protected]So the notation should be/^ ([a-za-z0-9_.-]) +\@ ([a-za-z0-9-]) +.) + ([a-za-z0-9]{2,4}) $/Answer:function checkEmailAddress(address){ if(/^([a-zA-Z0-9_\.\-])+\@(([
The RGB color is called additive color because you can produce white by adding R, G, and B together (that is, all light bounces back to the eye). Additive color is used to illuminate light, TV and computer monitors. For example, the monitor emits light from red, green, and blue phosphor to produce color.
The vast majority of visible spectra can be expressed as red, green, Blue (RGB) Three colors mixed in d
http://blog.csdn.net/scg881008/article/details/7168637If it is 2 million pixels of sensor, is not RGB a pixel is 2m,yuv is 1M?
First of all, 2 million pixels of sensor, is a 2M pixel;YUV isTV TransmissionA luminance signal (Y), two chromatic aberration signals (U component, v component)YUV (also known as YCRCB) is a color coding method adopted by the European Television System (belongs to PAL)。YUV is primarily used to optimize the transmission o
China's large-scale game industry (I think they follow suit blindly. In fact, many foreign games use OGL)
To use OpenGL to play a video, follow these steps:
1. Initialization
1) initialization
2) create a window
3) set the plotting function
4) set the timer
5) enter the message loop
2. loop display
1) Adjust the display position and image size
2) Drawing
3) display
There is something to note here. That is, OpenGL does not need to use the direct3d program initialization window t
RGB colors are called additive color because you can produce white by adding R, G, and B together (that is, all light bounces back to the eye).The additive is used for lighting, television and computer monitors. For example, the display produces color by emitting light from a red, green, and blue phosphor.
Most of the visible spectra can be expressed as red, green, Blue (RGB) Three colors in different prop
This article was reproduced from: http://blog.csdn.net/southcamel/article/details/8305873In simple terms,Yuv:luma (Y) + chroma (UV) format, typically sensor supports YUV422 format, that is, the data format is output in y-u-y-v orderRGB: Traditional red-green-blue format, such as RGB565, whose 16-bit data format is 5-bit R + 6-bit G + 5-bit B. G more than one, because the human eye is more sensitive to green.Each pixel of the RAW rgb:sensor corresponds to a color filter, and the filter is distrib
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