Auto-focus (AF) is one of key features in a camera. The real-time performance of passive AF method is an important issue for successful commercial IP network cameras. This paper proposes a real-time implementation of a passive AF method using focus va...
Auto-focus (AF) is one of key features in a camera. The real-time performance of passive AF method is an important issue for successful commercial IP network cameras. This paper proposes a real-time implementation of a passive AF method using focus value for DM36x-based IPNC. The adopted AF searching algorithm is the so-called ‘Modified Rule? based Search’ (MRS) which decides adaptively the amount of the focus motor movement for the next iteration. MRS is well known for faster processing speed and comparable accuracy among AF searching methods. Experimental results indicate that our implementation of the adopted MRS-based AF method works successfully in real-time and outperforms than global searching algorithm with respect to processing speed and accuracy.