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This paper proposes an improved Poisson image editing algorithm. It can improve the quality of the resulting composite between different images significantly by three steps. At first, we extract object boundary based on global Poisson matting. Then, optimal boundary is computed by shortest-path algorithm between the object boundary and user specified boundary. Finally, seamless composite is achieved...
This paper presents a model-based dynamic MRI method with time-sequential sampling in k-t space using phased array coils, The temporal variation of the dynamic object is modeled as a superposition of motion elements while the spatial variation is captured by the series coefficients, thereby converting the dynamic imaging problem to a parameter identification problem. Parallel data acquisition using...
One key problem in MR dynamic imaging (e.g. dynamic contrast-enhanced (DCE) imaging of breast cancer) is low spatiotemporal resolution. To tackle this problem, this paper presents a novel method to integrate parallel imaging using multiple receiver coils with generalized series (GS) imaging. The proposed method takes advantage of both the conventional parallel data acquisition scheme and the GS model-based...
Dynamic contrast-enhanced (DCE) MR cardiac imaging has been recognized as a unique and powerful tool for assessing both cardiac functions and physiological conditions of the heart tissues (e.g., tissue rejection following heart transplantation). However, because of cardiac motion and the limited data acquisition speed of existing MRI techniques, it has been very difficult to acquire dynamic images...
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