What is resolution ?
- Resolution is the number of pixels (individual points of color) contained on a display monitor, expressed in terms of the number of pixels on the horizontal axis and the number on the vertical axis.
- The sharpness of the image on a display depends on the resolution and the size of the monitor.
Camera resolution vs Image resolution :
- Normally we'll observe various image resolutions as 640x480,1280x720,1920x1080 etc (i.e., 640x480=307200,1280x720=921600,1920x1080=2073600 pixels in whole image).
- The number of pixels as a single number, like a 5 megapixel camera (a megapixel is a million pixels).
- This means the pixels along the width multiplied by the pixels along the height of the image taken by the camera equals 5 million pixels.
- In the case of our 640x480 monitors, it could also be expressed as 640x480=307200, or 0.3 megapixels.
Examples :
