To store and transmit images efficiently, many images use compression protocols to reduce their size. The most common of these are GIF and JPEG files. Both formats can reduce files significantly, however they are lossy compression formats and details of the image will be removed from the file.
- Images and photographs can take up a lot of space…depending on the size and amount of color accuracy…that needs to be captured in the image.…In theory, there are an infinite number of colors…that you can create through variations…of red, green, and blue light.…But at a certain point,…people can't tell the subtle differences between colors.…It is like when you go to the home improvement store…to buy paint.…You look at the thousands of color swatches…that line the wall.…You might take two colors and put them side by side…and say, "these are different"?…Take these colors for example.…
These are actually two different colors.…The color on the left is slightly redder and greener…than the color on the right.…But you probably couldn't tell the difference, right?…That's one trick that is used to reduce the size…of photographs and images.…Reduce the number of color variations.…One popular way to do that is to look at the GIF format.…You can pronounce it gif or jif…and there's actually quite a debate online…as to which is right,…
This course is the first in our Computer Science Principles series, designed around the AP Computer Science Principles (CSP) curriculum. It is a great foundation for anyone, at any age, to prepare for careers in technology and computer science. Lessons in this segment cover the building blocks of computing: binary logic, number systems, text and image encoding, compression, and simple communication protocols. Understanding these basics will help you understand the interplay between hardware, software, data, networks, and the people that use them.
- Binary and bits
- Digital communication
- Number systems
- Encoding text
- Compressing text and images