Spatial and tonal resolution
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This document discusses key concepts related to digital image resolution and file size. It covers: - Image size is defined as MxN pixels with k intensity levels, where k=0 for 1 color up to k=8 for 256 colors. Images with 2k levels are called k-bit. - Color images have 3 channels (RGB) with 8 bits each, so a pixel requires 3x8=24 bits or 3 bytes of storage. - Display resolution is measured in megapixels, with over 2 megapixels considered high definition. More pixels at a given screen size increases image quality. - Spatial resolution refers to pixel count, while gray-level resolution depends on bits per pixel
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![Size of the image
Size=MxNxk
When M = N, this equation becomes N2k
Image has 2k intensity levels.
k=0 2k =1 Only one color
k=1 2k =2 Two color [Black & White]
k=2 2k =4 Four color [Black, Dark Gray, Light Gray, White]
k=3 2k =8 Eight color [Black to Gray to White Shades]
When an image can have 2k intensity levels, it is common practice to refer to the image as a
"k-bit image." For example, an image with 256 possible discrete intensity values is called an
8-bit image.
For Color image (RGB)
Three channels
Red channel =8 bit
Green channel =8 bit
Blue channel =8 bit
Memory required to store a single pixel is 224
Resolution
Display Size is 640*480 when worl in VGA monitor (CG Programs)
Total pixels in a screen are 307200
Resolution in Megapixel is 307200/1000000=0.3072 Megapixel
When you say resolution is 5 Megapixel. Pixels on screen are 5000000
When resolution of screen is greater than 2Megapixel it is called High Definition (HD)
As resolution increases that is no of pixels, pixel size becomes small. More number of pixels
in that particular size of the screen. Picture quality enhances.](https://image.slidesharecdn.com/spatialandtonalresolution-200731175236/85/Spatial-and-tonal-resolution-1-320.jpg)
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MultimediaLecture5.pptx
Voice recognition and voice response systems allow for hands-free data entry using speech as the interface. Voice recognition systems analyze speech patterns to convert them to digital codes for computer input. Most require training a system to recognize a user's voice. Voice recognition is used in applications like manufacturing quality control and airline baggage sorting. Voice response systems provide verbal guidance for tasks using voice messaging and synthesis. Examples include automated phone systems and online services.
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The document provides information about multimedia topics including bit mapped graphics, resolution, greyscale graphics, colour graphics, video files, audio files, and multimedia design skills. It discusses how graphics are represented in memory as pixels and how increasing the number of bits per pixel increases the possible colors. It also provides examples of calculating file sizes for different media types based on resolution, color depth, frame rate, sample rate, and other factors. The key topics covered are how digital images and video are represented and stored, and considerations for multimedia design.
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Spatial and tonal resolution
- 1. Size of the image Size=MxNxk When M = N, this equation becomes N2k Image has 2k intensity levels. k=0 2k =1 Only one color k=1 2k =2 Two color [Black & White] k=2 2k =4 Four color [Black, Dark Gray, Light Gray, White] k=3 2k =8 Eight color [Black to Gray to White Shades] When an image can have 2k intensity levels, it is common practice to refer to the image as a "k-bit image." For example, an image with 256 possible discrete intensity values is called an 8-bit image. For Color image (RGB) Three channels Red channel =8 bit Green channel =8 bit Blue channel =8 bit Memory required to store a single pixel is 224 Resolution Display Size is 640*480 when worl in VGA monitor (CG Programs) Total pixels in a screen are 307200 Resolution in Megapixel is 307200/1000000=0.3072 Megapixel When you say resolution is 5 Megapixel. Pixels on screen are 5000000 When resolution of screen is greater than 2Megapixel it is called High Definition (HD) As resolution increases that is no of pixels, pixel size becomes small. More number of pixels in that particular size of the screen. Picture quality enhances.
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