formula to find compression ratio when bits per pixel is given
30kb = ? pixel?
256, 8 bits per pixel = 2^8 colours.
Most modern digital cameras use 24 bits (8 bits per primary) to represent a color. But more or less can be used, depending on the quality desired. Many early computer graphics cards used only 4 bits to represent a color.
141750
24 bits/pixel: one byte for red, one byte for green, one byte for blue.
No, they are shape based and do not have pixel bits.
You can represent a maximum of 2^24 colors in RGB. This equals to 16777216 possible colors.
A color image that uses 16 bits to represent a pixel typically divides the bits among the color channels. A common configuration is 5 bits for red, 5 bits for green, and 6 bits for blue (RGB565 format). This allows for a maximum of 65,536 unique colors in the image, as each pixel can represent one of those colors. Thus, the maximum number of distinct colors that a 16-bit image can represent is 65,536.
The number of pixels in 2000 KB depends on the color depth and format of the image. For example, a standard image with a color depth of 24 bits (8 bits for each of the RGB channels) would have about 3 bytes per pixel. Therefore, 2000 KB (or 2,000,000 bytes) would contain approximately 666,667 pixels (2,000,000 bytes ÷ 3 bytes/pixel). However, this is a rough estimate; actual pixel counts can vary based on compression and image format.
Typical uncompressed colored images use 24 or 32-bits per pixel of an image (RGB 8-bits per color). After some basic math of lets say an 8 Megapixel image quickly becomes a very large file on a computer. A type of compression used is to select some colors (typically called a palette) and for every pixel in the original image select a color in the palette that is closest to it (some other techniques exist to make it more accurate, ie dithering). If the palette of colors is smaller than 256 colors than a single byte (8 bits) is all that is needed per pixel to indicate what color in the palette should belong at that pixel.
Data compression allows for encoding information by using fewer bits.
The number of pixels in a 3MB picture can vary depending on the image's color depth and compression. For example, if the image is uncompressed and uses 24 bits per pixel (8 bits for each of the RGB channels), a 3MB image would contain approximately 1 million pixels (3MB = 3,000,000 bytes; 3,000,000 bytes / 3 bytes per pixel = 1,000,000 pixels). However, if the image is compressed (like in JPEG format), the pixel count could be higher while still being 3MB in size.