A New Chromakey Generation Scheme by Tracking the Frames with Dynamic Contents.

• Main Authors: Po-Yuen Wang, 王柏淵
• Other Authors: Shin-Hsung Twu
• Format: Others
• Language: en_US
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/j9q29g

碩士 === 中原大學 === 電機工程研究所 === 106 === In this thesis, we propose a method to track the frames with dynamic contents to generate the corresponding chromakey. In order to obtain the locations of frames, we use Lucas-Kanade method to track the features round the frames, and then generate the green screen with the tracked results for chromakey. There are four parts in this thesis. The first part is the detection of the features of frames. After selecting an area to do chromakey in the first frame of video by the user, the system will detect the features of the selected frame which are suitable for tracking. In the second part, we will use a mask to control the weights of the dynamic contents in the frames to be zero to prevent the failure of our tracking, since the contents of the selected frame will change continuously. The third part is to generate the green screen for chromakey by replacing the area of frames with green or other colors. The last part is the presentation of the experimental results by matlab. The contributions in this thesis are as follows: 1. Tracking the frames with dynamic contents: Instead of tracking a frame with fixed contents such as a picture on the clothes, the method in this thesis is able to track a frame with dynamic contents like a window with mutative scene. 2. Easy to do chromakey: Doing chromakey is a really hard work if you don’t set up the green screen while the filming. By using the method we proposed, it will reduce the difficulty such that the work to do chromakey will be easier.