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All countries have not adopted the same way of transmitting color signals. In France SECAM (Sequential Couleur A Memory), memorizes every other line to calculate the green. In the United States and other countries NTSC (phase change only one color differences): This is the first online videos and games system that was put in place, but it generates crosstalk which can be corrected by SECAM.
And the rest of the world uses PAL or Phase Alteration Line (distinction of the two differences and sent along with different phases). The chrominance signal is a subcarrier luminance. The number of lines, the scanning speed, the type of positive or negative signal to the issue are part of standards according to country and has nothing to do with color diffusion standards (PAL, SECAM, MESECAM and NTSC).
It was forbidden to have a black and white camera and a color camera. It was necessary to make the b/w from the three RGB components. Based on the sensitivity of eyes to different colors, the experts took 59% green, 30% red and 11% blue. They had just invented a new term: the luminance (Y). B/w TVs could therefore see black and white images from a color camera.
How now add to Y color information to regain our original RGB? Since there was already light (Y), it was necessary to color the black/ white with color information, they had no light value, but only indications of hue and saturation. Once the b/w was colorized, they had to find the trick that would transmit light (Y) and chroma (C).
This problem is partially solved by means of a birefringent crystal blades that spread out the details by splitting light rays. This results in a loss of definition, which gives the PAL and SECAM systems vertical resolution multiplied by 0.7 (Kell factor), which is not actually that of approximately 400 lines. When the display is not interlaced, the term progressive applies.
The horizontal scanning, that is from right to left for each line of an image. The horizontal scanning frequency is equal to frequency multiplied by the vertical number of lines divided by two due to interleaving. This result is not due to chance. If horizontal frequencies are almost the same at 50 Hz and 60 Hz is that it allows to use the same circuitry pan, thus saving money.
In recent decades, scholars knew the spectral characteristics of ahuman eye, which showed a clear preference for certain colors. Moreover, they knew that the color spectrum of eyes can be divided into three primary colors, which allow for mixing to create almost all other colors of a spectrum. The color film operates by using emulsions several layers each of which is sensitive to one primary color.
Engineers used the additive synthesis of red, green and blue (contrary paper absorbs light and uses the compound of subtractive cyan, magenta and yellow) Red, green and blue are the primary colors of additive synthesis. Similarly, the cyan, magenta and yellow are the primary subtractive colors. Shooting in color is done through an optical prism, which splits light on three sensors, otherwise there is red, green and blue filters.
And the rest of the world uses PAL or Phase Alteration Line (distinction of the two differences and sent along with different phases). The chrominance signal is a subcarrier luminance. The number of lines, the scanning speed, the type of positive or negative signal to the issue are part of standards according to country and has nothing to do with color diffusion standards (PAL, SECAM, MESECAM and NTSC).
It was forbidden to have a black and white camera and a color camera. It was necessary to make the b/w from the three RGB components. Based on the sensitivity of eyes to different colors, the experts took 59% green, 30% red and 11% blue. They had just invented a new term: the luminance (Y). B/w TVs could therefore see black and white images from a color camera.
How now add to Y color information to regain our original RGB? Since there was already light (Y), it was necessary to color the black/ white with color information, they had no light value, but only indications of hue and saturation. Once the b/w was colorized, they had to find the trick that would transmit light (Y) and chroma (C).
This problem is partially solved by means of a birefringent crystal blades that spread out the details by splitting light rays. This results in a loss of definition, which gives the PAL and SECAM systems vertical resolution multiplied by 0.7 (Kell factor), which is not actually that of approximately 400 lines. When the display is not interlaced, the term progressive applies.
The horizontal scanning, that is from right to left for each line of an image. The horizontal scanning frequency is equal to frequency multiplied by the vertical number of lines divided by two due to interleaving. This result is not due to chance. If horizontal frequencies are almost the same at 50 Hz and 60 Hz is that it allows to use the same circuitry pan, thus saving money.
In recent decades, scholars knew the spectral characteristics of ahuman eye, which showed a clear preference for certain colors. Moreover, they knew that the color spectrum of eyes can be divided into three primary colors, which allow for mixing to create almost all other colors of a spectrum. The color film operates by using emulsions several layers each of which is sensitive to one primary color.
Engineers used the additive synthesis of red, green and blue (contrary paper absorbs light and uses the compound of subtractive cyan, magenta and yellow) Red, green and blue are the primary colors of additive synthesis. Similarly, the cyan, magenta and yellow are the primary subtractive colors. Shooting in color is done through an optical prism, which splits light on three sensors, otherwise there is red, green and blue filters.
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