Shih-Kuan Liao

  • Citations Per Year
Learn More
Traditional optical flow techniques applied to object tracking generally perform global searching and calculations of brightness and light intensity of the object in the image. In addition, traditional optical flow techniques assume that the light intensity is constant across a series of consecutive images. The goal is to obtain the displacement and moving(More)
The differential volume rendering method is a ray casting based method for time-varying-volume-data. In the differential volume rendering method, the changed fractions of volume data between consecutive time steps are extracted to form differential files. Based on the differential files, only the changed pixels, instead of all the pixels in the image, are(More)
The binary-swap (BS) and the parallel-pipelined (PP) methods are two well-known image compositing methods for sort-last parallel volume rendering systems. However, these two methods either restrict the number of processors to a power-of-two or require many communication steps to transform image data that results in high data communication overheads. In this(More)
In this paper, we present a novel method to meet the time-critical requirement in rendering time-varying volume data. In time-critical rendering, the rendering is demanded to be completed in a given time budget. Our approach is modified from the differential volume rendering, which updates only the changed pixels instead of all pixels on the image plane.(More)
The differential volume rendering method is a ray casting based method for time-varying volume data. In the differential volume rendering method, the changed voxels between consecutive time steps are extracted to form differential files in advance. When the dataset is to be rendered, changed voxels are projected onto the image plane to determine the(More)
Symmetry is one of the important features of many nature or artificial structures. In a natural image with a major subject, the largest symmetric region is usually the subject. This paper presents a method to segment the largest symmetric region in a nature image. Firstly, the image is segmented into regions with internal similarity. Secondly, according to(More)
  • 1