I do not understand the point of your post.
It appears to be a literal translation of a foreign language into English.
Here is a link that might help you:
http://www.shortcourses.com/sensors/
..
Recently on the Internet to see a friend of perturbation post "a pixel resolution and doubts about". Pixels (Pixel) and the Resolution (Resolution) this two word for all of us is to see that often. But it still has some problems worth pondering. Therefore, I want to send a post say resolution, also be taken to the friends of the post to answer them. Personal view, such as is not satisfactory, we welcome criticism to correct. The resolution of the digital camera We buy a digital camera, the resolution is a very important index. The early years of digital camera resolution is very low, such as CASIO QV-10 of less than 100000 pixels (320 X240), 180000 pixels of KODAK DC20 (493 X373) the resolution is not as good as now camera phone and camera. After nearly 10 years of development, the resolution of the digital cameras have increased, now has more than 10 million pixels. In the above post I heave A70 camera Settings for 2048 X1536X16M speaking, this is 3 million pixels. 2048 X1536 means in width has 2048 pixels, at the height of the direction to have 1536 pixels. 2048 X1536 = 3145728, we call it for 3 million pixels (because 1 K = 1024, 1 M = 1048576). And then the 16 M refers to the color depth. Each pixel is colored, and each pixel color with three BYTE to record, respectively is red, green and blue. Each BYTE can record 256 levels, so it can record of 256 X256X256 = 16777216 different colors, namely 16 M, also known as 24 bit color depth. Therefore, if press RGB color record a 2048 X1536 pixel image files, will be 2048 X1536X3 = 9437184 a BYTE (9 MB, plus other information file first class, you will end up more than 9 MB. But digital camera with JPG format most at ordinary times, this is a kind of lose really, compression larger image file format, usually, 2048 X1536 pixels JPG document according to the file size of different compression ratio is different also, in about 1-2 MB or so. Also can be calculated X1200X16M 1600 other pixel file size. This shows, 2048 X1536X16M and 1600 X1200X16M photos, including the pixel is different, that is the information content is not the same. If use the same output resolution to print photographs, get photos size is not the same, in turn, if the output of the same size photo, photo of unit length pixel points is different, also is the exquisite photo degree is not the same. From the above discussion, we can deduce that the Resolution of the digital camera is not true Resolution (Resolution), but XiangSuShu (Pixel). The resolution and the print or print digital photos of the quality and have a direct relationship. Picture quality is the printer to print the equipment or digital output resolution. The resolution of the printer is to point to in print output level and vertical orientation every inch of the most able to print the points of dpi (dot per Inch). And this kind of digital film printing the printout device called ppi (pixel per resolution Inch). Print the higher resolution, produce to the point of the smaller size, printed image is more exquisite. At the same time we need to pay attention to, the same XiangSuShu image file in print, print the higher resolution, the output of the same school as the image is a 2560 X1920 pixel image file, with 300 ppi resolution of print, can get a 8.5 X6.4 inches (that is, 10 inches) photos, but with 150 ppi resolution, can get 15 X12. 8 inches (namely 20 inches) picture. If X1536X16M in 2048, 1600 X1200X16M, 1024 X768X16M three resolution photos also wash 5 inch photos into digital, the effect will be by how much? To answer this question, we must first consider digital output devices resolution is much. 5 inches in length and width of the photos were 5 and 3.5 inches. If use Fuji Frontier The highest resolution printing equipment (about 300 ppi) to output. 5 inches photos of the pixel is 1500 X1050 requirements. That is to say, 2048 X1536X16M and 1600 X1200X16M print pictures of the effect is no different. 1024 X768 is used to print the photos, the effect also sent some is limited. If use 150 ppi resolution (this is general requirement can accept resolution) to output, the above three resolution photos are the results will be without distinction. We can say, only in the flush of large size photo, high resolution is meaningful. If just flush 5 inch, six inches of such small photo, big resolution photos is not out of the show to advantage. The way here briefly discuss with ppi of two concepts is dpi difference. Ppi is about the image details, it is to show how many pixels per inch, and output equipment is dpi physical ability, to the printer is every inch of the play is how many points. General now of laser printer can print 600 dpi resolution. But, printers printed point is no gray-scale, that is only black (a bit) and white (no point) two kinds of cases. In print words or similar line of black and white two values such as graphics figure, is no problem. In printing have pictures of gray-scale images, is not the same. At this time, generally should use dithering algorithm to density to replace gray. In this case, a grey order "pixels" will put many no ash levels of the "point" combinations to said. In this combination of black spots, the more you'll say the pixel color deep, closer to black, instead, it means the color is light. So, although the dpi printer is high, but the print the image of the ppi in fact are much smaller. The display resolution Katie83: if X1536X16M 2048, 1600 X1200X16M, 1024 X768X16M this three resolution photos also to a 1024 X768 (the resolution of the display) to display it, what would you do differently? Say to that, you have to talk about the resolution of the display. With digital camera, what we call the display resolution in the physical sense is not the resolution, but pixel, also is refers to the screen can show the number of the basic pixel. With the display technology development, the display resolution of more and more is also high. From the early years of CGA (320 X200) to EGA (640 X400), VGA (640 X480) to 1024 X768 widely adopted now. On a display image and characters that more and more is also fine, quality more and more is also high. If say the real resolution, is not only with the display mode, but also related to the size of the display relevant. With 1024 X768 case, if is 15 inches of the display, the diagonal line for 15 inches, wide and high ratio is 4:3, accordingly, its width is 12 inches. The resolution should is every inch of about 85 points. And for 20 inches of display is concerned, resolution for every inch of the 64 points. The screen size large resolution but smaller? It is strange, because screen size, can support more pixels mode. Such as the screen size for 20 inches, can have 1600 X1200 or 1920 X1440, etc. In 1024 X768 resolution display, 1024 X768 photo in 100% when also can see that the picture, and 2048 X1536X16M and 1600 X1200X16M resolution photos show in 100% when cannot see the picture. You can with a small percentage (such as 50%) to display. Or use 100% display, but now you can only see part, use up, down, left and right to see the motion picture other part. Scanner resolution Talk about the resolution of the scanner. On the scanning of the evaluation of the quality, the resolution of the scanner is a very important factors. Resolution is to point to a digital get information quantity or density. The resolution of the optical scanner also points resolution and interpolation resolution. As a scanner index, optical resolution refers to the optical system of the scanner can scan the highest density of sampling information (that is, the number of pixels in the unit length by); And inserted in the resolution is after the resolution of the interpolation operation get. Apparently, a scanner to the resolution of the evaluation, the most important is its optical resolution (like DC zoom lens multiples is the most important, digital zoom is just a pseudo zoom just). In scanning, specific scanning resolution is can be set. With high resolution scanning get large amount of information, and produce the file size of large also. So, not scanned the higher resolution set the more good, general according to the needs of the print after to set the scanning resolution. The resolution of the camera Finally, still have to say the resolution of the camera said. Resolution is good or bad judgment lens is one of important index, generally with the unit can distinguish the distance of the line logarithm (such as per mm line logarithm lp/mm) to said. The resolution of the camera partly decides the subject through the lens of the clear degree after imaging. <div>
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