Depending on the task[1], it takes 1 week[2] to 1 year[3]. 1. https://news.mit.edu/2011/vision-problem-0411 https://news.mit.edu/2011/vision-problem-0411 2. S

Depending on the task[1], it takes 1 week[2] to 1 year[3]. 1. https://news.mit.edu/2011/vision-problem-0411 https://news.mit.edu/2011/vision-problem-0411 2. Shape recognition 3. Face recognition