Journal
JOURNAL OF DIGITAL IMAGING
Volume 36, Issue 2, Pages 433-440Publisher
SPRINGER
DOI: 10.1007/s10278-022-00743-3
Keywords
Hardware accelerator; Data flow; Deep neural networks; Convolutional neural networks; Deep learning; Histopathologic images; Classification
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Deep learning has become an intriguing topic in various fields for more than a decade, especially in the area of image classification. However, the heavy computational operations in deep neural networks pose challenges in terms of power consumption and runtime. This paper proposes a deep learning accelerator and its data flow for histopathologic image classification, which exhibits significant performance improvement compared to current general-purpose accelerators and data flows, as demonstrated by simulation results.
It is more than a decade since machine learning and especially its leading subtype deep learning have become one of the most interesting topics in almost all areas of science and industry. In numerous contexts, at least one of the applications of deep learning is utilized or is going to be utilized. Using deep learning for image classification is now very popular and widely used in various use cases. Many types of research in medical sciences have been focused on the advantages of deep learning for image classification problems. Some recent researches show more than 90% accuracy for breast tissue classification which is a breakthrough. A huge number of computations in deep neural networks are considered a big challenge both from software and hardware point of view. From the architectural perspective, this big amount of computing operations will result in high power consumption and computation runtime. This led to the emersion of deep learning accelerators which are designed mainly for improving performance and energy efficiency. Data reuse and localization are two great opportunities for achieving energy-efficient computations with lower runtime. Data flows are mainly designed based on these important parameters. In this paper, DLA-H and BJS, a deep learning accelerator, and its data flow for histopathologic image classification are proposed. The simulation results with the MAESTRO tool showed 756 cycles for total runtime and 3.21 x 10(6 )GFLOPS roofline throughput that is an extreme performance improvement in comparison to current general-purpose deep learning accelerators and data flows.
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