Answer:
Explanation:
In digital image processing, degradation is a process of introducing defects to the image. Understanding the degradation function will allow restoration of the original image.
There are many different causes for image degradation such as motion blur, digital noise and lens off-focus. In cases like motion blur, it is possible to come up with an very good estimate of the actual blurring function and "undo" the blur to restore the original image. For digital noise, a statistical model can be set up to compensate for the degradation it caused. Similarly lens focus can be compensate by an optical model if the mis-focus is known.
The above are three degradations that I could find. A lot more information can be found about restoration functions. If you search for image degradation online, you will find a discussion on Quora and an interesting introduction from Rice University. Good luck!
Answer: A. Using different cell styles can help you differentiate different types of data.
B. Fonts should be easily readable and of appropriate size.
D. Be consistent with themes across worksheets and workbooks.
Explanation:
A theme refers to the preset package that contains functionality details and graphical appearance.
The guidelines for using themes include:
• Using different cell styles can help you differentiate different types of data.
• Fonts should be easily readable and of appropriate size.
• Be consistent with themes across worksheets and workbooks.
Therefore, the correct options are A, B and D.
Answer:
The purpose of the backup is to create a copy of data that can be recovered in the event of a primary data failure. Primary data failures can be the result of hardware or software failure, data corruption, or a human-caused event, such as a malicious attack (virus or malware), or accidental deletion of data.
