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We describe a simple but robust algorithm for estimating the heart rate pulse from video sequences containing human skin in real time. Based on a model of light interaction with human skin, we define the change of blood concentration due to arterial pulsation as a pixel quotient in log space, and successfully use the derived signal for computing the pulse(More)
We present in this paper a general algorithm called uniform color transfer for transferring dominant colors in one image to another. Our algorithm frees users from interactions required for colorizing grayscale image or transferring color between images. Different from existing algorithms, we cluster the source color image into regions using the GMM-EM(More)
The emerging of third generation mobile system (3G) makes various video applications in wireless environment possible. Scalable video codec (SVC) is the latest amendment for H.264/AVC that allows efficient, standard-based temporal, spatial, and quality scalability of video bit streams. The 3rd Generation Partnership Project (3GPP) video services, e.g.(More)
Scalable Video Codec (SVC) is an extension to the H.264/AVC that provides support for different types of scalability. 3GPP video services (e.g. Multimedia Broadcast/Multicast Services, Packet-switched Streaming Service and Conversational Service etc.) may greatly benefit from the adoption of SVC. The latest 3GPP/3GPP2 standards have already begun to support(More)
A method is proposed for tracking objects in face with varying viewpoints and partial occlusions. A low-dimensional subspace is built to model the appearance of the target. And each image sample is presented as a coefficient vector in the subspace. A collection of image patches are sampled as the candidates of the object image region in the current frame,(More)
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