An image array is fundamentally an array of numbers.
Understanding Image Arrays
Based on its core definition, an image array serves as the digital representation of a visual image. Think of it as a grid where each cell corresponds to a single point in the image, known as a pixel.
Here's a breakdown based on the reference:
- It is an array of numbers. This means the image data is stored in a structured numerical format, often resembling a grid or matrix in computer memory.
- It has a number for each pixel. Every tiny point (pixel) that makes up the image is associated with at least one number.
- Each number is the value for that pixel. This value determines something about the pixel's appearance, such as its brightness or color intensity.
How Pixels and Arrays Relate
Imagine a simple grayscale image, like a black and white photo. For such an image, a single number might represent the intensity of gray for each pixel, where 0 could be black and 255 could be white (in an 8-bit system).
| X/Y | 0 | 1 | 2 | 3 |
|---|---|---|---|---|
| 0 | 255 | 250 | 240 | 200 |
| 1 | 250 | 230 | 210 | 180 |
| 2 | 240 | 210 | 190 | 160 |
In this simplified table, each number (like 255, 250, etc.) is the value for a specific pixel in the grid, forming the image array. This array of numbers is what computers use to store, process, and display images.
For color images, the array might be more complex, often having multiple numbers (channels) for each pixel to represent different color components (like Red, Green, and Blue values). Still, the core concept remains: the image is stored as an organized collection of numbers.
