AP Computer Science - Unit 2, Chapter 1

Heuristic

A problem solving approach (algorithm) to find a satisfactory solution where finding an optimal or exact solution is impractical or impossible.

Image

A type of data used for graphics or pictures

metadata

Data that describes other data. For example, a digital image my include metadata that describe the size of the image, number of colors, or resolution

pixel

short for "picture element" it is the fundamental unit of a digital image, typically a tiny square or dot which contains a single point of color of a larger image

RGB

the RGB color model uses varying intensities of (R)ed, (G)reen, and (B)lue light are added together in to reproduce a broad array of colors

Lossless Compression

a data compression algorithm that allows the original data to be perfectly reconstructed from the compressed data.

Lossy Compression

a data compression method that uses inexact approximations, discarding some data to represent the content. Most commonly seen in image formats like .jpg.

Abstraction

Pulling out specific differences to make one solution work for multiple problems

Innovation

A novel or improved idea, device, product, etc, or the development thereof

Bit

A contraction of "Binary Digit". A bit is the single unit of information in a computer, typically represented as a 0 or 1

Binary

A way of representing information using only two options.

Hexadecimal

A system of numerical notation that has 16 rather than 10 as its base.

Algorithm

A process or set of rules to be followed in calculations or other problem-solving operations, especially by a computer.