Yonghong Song

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Helper threading is a technique that utilizes a second core or logical processor in a multi-threaded system to improve the performance of the main thread. A helper thread executes in parallel with the main thread that it attempts to accelerate. In this paper, the helper thread merely prefetches data into a shared cache and does not incur any other(More)
Iterative stencil loops are used in scientific programs to implement relaxation methods for numerical simulation and signal processing. Such loops iteratively modify the same array elements over different time steps, which presents opportunities for the compiler to improve the temporal data locality through loop tiling. This article presents a compiler(More)
Busulfan (1,4-butanediol dimethanesulfonate) was used to deplete endogenous germ cells for the enhanced production of chicken germline chimeras. Utilizing immunohistochemical identification of primordial gem cells (PGCs) in Stage 27 chicken embryos, two delivery formulations were compared relative to the degree of endogenous PGC depletion, a busulfan(More)
In this paper, we present a novel approach to detect text in natural scenes. This approach is a type of bionic method, which imitates how human beings detect text exactly and robustly. Practically, human beings follow two steps to detect text: the first step is to find salient regions in a scene and the second step is to determine whether these salient(More)
As microprocessor speeds increase, a large fraction of the execution time is often lost to cache miss penalties. This loss can be particularly severe in processors such as the UltraSPARC-IIICu which have in-order execution and block on cache misses. Such processors rely greatly on the compiler to reduce stalls and achieve high performance. This paper(More)
Text plays an important role in daily life due to its rich information, thus automatic text detection in natural scenes has many attractive applications. However, detecting such text is a challenge problem, because of the variations of scale, font, color, lighting and shadow. In this paper, we propose a method that detects text in natural scene through two(More)