Which of the following statements is true about lossy compression?
What is the primary advantage of using lossless compression over lossy compression?
In which scenario would lossless compression be the best choice?
Sarah is trying to compress an image of her family vacation to send to her grandmother via email. The image is large, and Sarah doesn’t mind if the quality of the image is slightly reduced to make the file smaller.
A media company wants to store and stream music tracks online. They are concerned about file size and want to minimize it while maintaining good audio quality. The tracks will be streamed to users, and some loss in quality is acceptable.
A digital photographer is uploading a high-quality photo to a website portfolio. The photo has intricate details that the photographer wants to keep intact for professional presentation. The photographer needs to ensure the photo remains of the highest possible quality.
A programmer is working on a software application where users upload videos. The videos must be compressed before they are stored to save disk space. Which of the following statements is true about video compression?
Analog data can be turned into digital data by using a process called sampling (sampling technique). This means measuring the values of the analog signals at regular intervals. These measurements (or samples) are then converted into digital data by determining how many bits are needed to store each sample.
In your own words explain what you understand by the terms analog and digital signals!!
In situations where quality or ability to reconstruct original data is maximally important we use lossless compression
In situations where minimizing data size or transmission time is maximally important we use lossless compression
Lossy data compression algorithms can usually reduce the number of bits stored or transmitted more than lossless compression