I need help with literature review with below details please:

Content: object detection tools (preferably those that require high tech and complex hardware)

What are they? What do they do? Why are they not practical and need improvements? Any features? And other info like that to complete the literature review.

Notes:

i) NO plagiarism

ii) Please include sources, (valid and credible sources only, no wikipedia please)

iii) about 2-3 pages