Pixel is short for Picture Element; a pixel is a single point in a graphic image. Graphics monitors display pictures by dividing the display screen into thousands (or millions) of pixels, arranged in rows and columns. The pixels are so close together that they appear connected.
The number of bits used to represent each pixel determines how many colors or shades of gray can be displayed. For example, in 8-bit color mode, the color monitor uses 8 bits for each pixel, making it possible to display 2 to the 8th power (256) different colors or shades of gray.
On color monitors, each pixel is actually composed of three dots - a red, a blue, and a green one. Ideally, the three dots should all converge at the same point, but all monitors have some convergence error that can make color pixels appear fuzzy.
The quality of a display system largely depends on its resolution, how many pixels it can display, and how many bits are used to represent each pixel. VGA systems display 640 by 480, or about 300,000 pixels. In contrast, SVGA systems display 800 by 600, or 480,000 pixels. True Color systems use 24 bits per pixel, allowing them to display more than 16 million different colors.
In some contexts, pixel is used to refer to a single scalar element of a multi-component representation (more precisely called a photosite in the camera sensor context, although the neologism sensel is also sometimes used to describe the elements of a digital camera's sensor), while in others the term may refer to the entire set of such component intensities for a spatial position. In color systems that use chroma subsampling, the multi-component concept of a pixel can become difficult to apply, since the intensity measures for the different color components correspond to different spatial areas in a such a representation.
Everybody wants to get a better enjoyment. But not all videos or movies are high definition, thus you need a tool to complete this task. The HD Video Converter Factory Pro is the best choice for you. It support conversion between SD video and HD video each other. So you can enjoy high resolution video in low pixel environment. This HD video converter builds in 150 video formats; it easily supports Multi-track HD video M2TS, MKV, AVCHD, HDTV BDAV and MPEG-TS video movies. Supporting Multi-CPU and Hyper Threading, the high definition video conversion software offers up to 3x-5x real time video converting speed.
HDTV DTS MPEG-PS TS M2TS FFDShow AAC HD Video NTSC Pal SECAM Internet Radio Aspect Ratio 1280*720, 1920x1080
AVI MP4 MKV Video 3GP FLV MP3 Aspect Ratio 1920*1080 H264 MPEG-4 AVC AVCHD DTS TS FFDShow AAC HD Video Resolution QuickTime Video Encoder Audio BitRate Video BitRate Audio Channels Frame Rate Sample Rate Video Profile iPad iPod PSP iPhone Android Symbian DVD NTSC HD Video Flash FLV SWF YouTube WMV TS Video Editor Video Converter
