Q.21 Which of the following are Computer Vision tasks?1. Image Classification2. Object Detection3. Object Localization4. All of the above

The answer is 4. All of the above.

Here's why:

1. Image Classification: This is a task in computer vision that classifies an image as a specific object or entity. It's a type of categorization where an algorithm is trained to recognize various classes and then it categorizes new images into these classes.

2. Object Detection: This is another task in computer vision where the algorithm not only classifies the objects in an image, but also identifies their location. In other words, it draws a bounding box around the object to show where in the image the object is.

3. Object Localization: This is similar to object detection but it only identifies the location of one object in an image. If there are multiple objects, it would only draw a bounding box around the primary object.

So, all of the options mentioned are tasks in computer vision.