Patent KR-20140041998-A (KR)
Title: Method and apparatus for chromakey compositing of subject image and background image
Inventor: SUNG IN GYU
IPC: H04N5/265
Filed: 2012-09-26
Abstract: The present invention relates to a method and an apparatus for synthesizing a chromakey processed subject image and background image in an image synthesizer. The purpose of the present invention is to automatically adjust perspective on a background by controlling the scale of a subject image to be suited for a background image when the image synthesizer synthesizes the chromakey processed subject image and background image. The apparatus of the present invention includes: an external input device consisting of a camera, a microphone, and an infrared sensor; an image processing device consisting of a chromakey processing unit for processing a subject image using a chromakey and an image synthesizing unit for enlarging or reducing the size of a subject image at a predetermined position of a background image at a predetermined ratio; a voice processing device consisting of a voice synthesizing unit for synthesizing a singing voice signal of a user and accompaniment sound and a voice output unit for outputting sing and accompaniment sound; a control unit for controlling the recognition of a subject according to a signal inputted from the infrared sensor, and image synthesis and voice synthesis according to the selection of the user through a key input unit; an external output device consisting of a speaker for outputting voice under the control of the control unit, an image output unit for outputting an image where a subject image, in which the subject is processed using the chromakey, and a background image and a foreground image are synthesized, a mixer unit for storing sing and accompaniment sound, outputted through the speaker, and a synthesis image, and an external output unit for transmitting voice and image data by wireless; and a background and foreground image storage unit for classifying and storing a background image and a foreground image according to categories. [Reference numerals] (AA) Start; (BB) Obtain a subject video; (CC) Processing an image using a chromakey; (DD) Background image selected?; (EE,KK,OO,UU) No; (FF,LL,PP,TT) Yes; (GG) Allow a user to select a background image; (HH) Access the background image, and the synthesis position and size information of a subject; (II) Synthesize the subject image and the background image; (JJ) Path of the subject image moved?; (MM) Synthesize the subject image at a predetermined position of the background image at a predetermined size; (NN) Size of the subject image changed?; (QQ) Synthesize the subject image and the background image while moving and changing the position and size of the subject image on the background image at predetermined time intervals; (RR) Synthesize the subject image and the background image while moving and changing the position of the subject image on the background image at predetermined time intervals; (SS) Foreground image selected?; (VV) Synthesize the foreground image, the subject image, and the background image; (WW) Output the synthesis image, the voice of the user, and accompaniment sound in synchronization with one another; (XX) End