chroma tartarus

I. Introduction YUV (also known as ycrcb) is a color encoding method used by European television systems (PAL ). YUV is mainly used to optimize the transmission of color video signals, so that it is backward compatible with vintage black and white TVs. Compared with RGB video signal transmission, RGB requires three independent video signals to be transmitted at the same time ). "Y" indicates the brightness (Lumina nce or Luma), that is, the grayscale value. It is a baseband signal. "U" and "V" r

videos.Medium-term requirements for accelerators. YUV format Resolution 2 confirm the h264 video format-h264 Supported 4 : 2 : 0 The encoding and decoding of consecutive or interlaced videos. YUV (also known as ycrcb) is a color encoding method used by European television systems (PAL ). YUV is mainly used to optimize color video signal transmission, making it backward compatible with old-fashioned Black/white TV. Compared with RGB video signal transmission, RGB requires three independent

viewer. this issue will become increasingly important as realism of computer-generated accident recreations improves. allowing a trainee to experience a "real" accident might be a valuable teaching tool (figure 7 ). reconstructions can be used not only in training, but also in prevention as the virtual accident is reviewed and the virtual environment modified to assess potential prevention strategies. University of Missouri-Rolla-Virtual Reality training of jack-leg roof bolters, presented

progressive transparency, this specifies the end transparency position opacity value. Style specifies the transparency mode. 0 indicates the overall transparency, 1 indicates the linear transparency, and 2 indicates the circular transparency, 3. rectangular transparency6. Remove the color chroma (color = color value) to make the color area of the object transparent with the specified color7. Create a shadow dropshadow (color = shadow color, offx = ho

* g + 0.11 * BU = (B-Y) * 0.493V = (R-Y) * 0.877In turn, the YUV formula for converting to RGB is as follows:R = Y + 1.14 VG = Y-0.39u- 0.58 VB = Y + 2.03uSample CodeThe following is an example of the conversion code from rgb24 to yv12 (yuv420) (C ++ ):Uint_8_t * psrc =; // This is RGB bit streamUint_8_t * yuv_image = new uint_8 [320*240*3/2]; // yuv420 bit streamInt I = 0, j = 0;Int width = 320; // width of the RGB imageInt Height = 240; // height of the RGB imageInt upos = 0, VPOs = 0;For (I

: composite sync bit 1: sync on green bit 0: serration vsync 21: Maximum Horizontal Image Size (in centimeters). 22: Maximum Vertical Image Size (in centimetres). 23: Display Gamma. Divide by 100, then add 1 for actual value. 24: Power Management and Supported Feature(s): bit 7: standby bit 6: suspend bit 5: active-off/low power bit 4-3: display type. 00=monochrome, 01=RGB colour, 10=non RGB multicolour, 11=undefined bit 2: standard colour space bit 1: prefe

"Y" indicates luminance and Luma, while "U" and "V" indicate chrominance and concentration (chrominance and chroma) Packed formats: stores y, U, and v values into macro pixels arrays, similar to RGB.Planar formats: stores the three portions of Y, U, and V in different matrices. Yv12: brightness (row x column) + U (row x column/4) + V (row x column/4) I420: brightness (row x column) + V (row x column/4) + U (row x column/4) Yuv420p: yyyyyyyy uu

. Microsoft. Blur (pixelradius = 4, makeshadow = false); here we will blur the effect Set pixelradius to different values to see different blur effects. Let's give it a try. Next, let's look at the transparent filter. Let's first look at the display effect: We can clearly see that the yellow color of the tiger is filtered out. Let's take a look at the Code: Let's take a look at this sentence: filter: chroma (color = ff6800); remove the golden colo

transmitted at the same time ). "Y" indicates the brightness (luminance or Luma), that is, the gray scale value. "U" and "V" indicate the color (chrominance or chroma), which is used to describe the image.ColorAnd saturationUsed to specify the color of a pixel. The "brightness" is established through the RGB input signal by overlapping specific parts of the RGB signal. "Color" defines two aspects of color-tone and saturation, expressed by Cr and CB r

In the computer, RGB (red, green, blue), red, green, blue, and HSL (hue, saturation, lightness) colors, saturation, and brightness are our two most commonly used color formats, in some cases, we need to convert them accordingly. The principle of conversion between them is as follows: (more color format conversion can be viewed: http://www.easyrgb.com/index.php? X = math) RGB ------ HSL code Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-

180 degrees 4. Fuzzy blur (add = true/false Direction = direction Strength = strength)Add: Specifies whether to perform fuzzy direction based on the impression style; fuzzy direction: strength; fuzzy intensity5. transparent object alpha (opaction = 0-100, finishopacity = 0-100, style = 0/1/2/3)Opaction object overall opacity value finishopacity when the object uses the progressive transparency, this specifies the end transparency position opacity value. Style specifies the transparency mode.

hide the specified border (only specifying a separate border in one direction will not be displayed, you must specify at least two directions for display. Therefore, you must set the direction in which the connection is not displayed to be transparent ). For example: 　　 However, we only need one color, so we need to set the color of the other border to transparent. It is worth noting that the border color under IE6 does not support the transparent value and is always black. Therefore, you need

before considering the luma optimal solution after the chroma optimization.Calculate the mode of RD cost, which is the smallest in the frame of encoding, to obtain the encoding method of the current Luma component.Core Function: rdopt. C: int rdcost_for_macroblocks (.....)In this function, we analyze different block modes and the current encoding status. The intra coding involves i4mb, i8mb, i16mb, and ipcm (ipcm is Something weird. Let's talk about

and Segmentation Here is a little script I put together that first encodes an input file and then segments it into 10 second chunks:#! /Bin/sh BR = 800 K FFmpeg-I $1-F mpegts-acodec libmp 3lame-ar 48000-AB 64 K-s 320 × 240-Vcodec libx264-B $ br-Flags + loop-CMP + chroma-partitions + parti4x4 + partp8x8 + partb8x8-Subq 5-trellis 1-Refs 1-coder 0-me_range 16-keyint_min 25-SC _threshold 40-I _qfactor 0.71-BT 200 k-maxrate$ Br-bufsize $ Br-rc_eq'Blurcpl

specifying the "src" attribute. Input Input form field Marquee Move subtitle Effect Span Defines an area on the web page. The height, width, or absolute position of this area is known. Table Table TD Table data cell Textarea Text area Tfoot Multi-line Input text box Th Table

established in 1906 and has a history of more than 90 years. It is the world's earliest international electrical Standardization Organization, responsible for international standardization work in the field of electrical engineering and Electronic Engineering. 7. JVT Joint Video Team joint video workgroup 8. PTs presentation time stamp PTS is mainly used to measure when decoded video frames are displayed. 9. DTS decode time stamp DTS mainly identifies when bit streams in the memory are read int

background of a webpage5.1 background color5.2 background image5.3 Background 1: My Personal Homepage5.4 Background 2: The old saying "Nian nujiao Chibi huaigu"Chapter 4 set the style of a table and a form with CSS6.1 control table6.2 table Example 1: The color of the row to be separated6.3 table Example 2: The table that changes color when the mouse passes6.4 table Example 3: Calendar6.5 CSS and forms6.6 integrated Example 1: an Excel table directly entered6.7 comprehensive Example 2: imitatin

Blend: Alpha blends input with the graphics. Merges the input video and image into Alpha. Cproc: color processing. Color Processing. Such as dynamic contrast enhancement, saturation enhancement, and color space conversion. CEC: Consumer Electronics Control. Consumer Electronic Control Chr_us/chr_ds: chroma downsampler (chr_ds), chroma_upsampler (chr_us), used for converting yuv420 CIG: Constrained image generator. Produce constrained (low-resolution)

by all cr samples (with half the stride of the Y lines, and half the number of lines), then followed immediately by all CB samples in a similar fashion. Iyuv The same as yv12, before t for swapping the order of the CB and Cr planes. Nv12 A format in which all y samples are found first in memory as an array of unsigned char with an even number of lines (possibly with a larger stride for memory alignment ). this is followed immediately by an array of unsigned char

specifying the "src" attribute. INPUT Input form field MARQUEE Move subtitle Effect SPAN Defines an area on the web page. The height, width, or absolute position of this area is known. TABLE Table TD Table data cell TEXTAREA Text area TFOOT Multi-line Input text box TH Table