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An Efficient Implementation of the Gradient-Based Hough Transform Using DSP Slices and Block RAMs on the FPGA

机译:在FPGA上使用DSP Slice和Block RAM有效实现基于梯度的霍夫变换

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The gradient-based Hough transform is an improvement of the original Hough transform. It is utilized to reduce substantially the computation quantity and make the detection more accurate using gradient information. The main contribution of this paper is to present an efficient implementation of the gradient-based Hough transform for straight lines detection using a Xilinx Virtex-7 FPGA with embedded DSP slices and block RAMs. We implemented the circuit using 13 DSP48E1 slices, 180 block RAMs with 36Kbits and 8 block RAMs with 18Kbits. The experimental results show that the architecture runs in 260.061MHz and for an n×n grayscale image, our circuit can perform in n + (√2 + 2)n + 232 clock cycles including the computation of gradient information.
机译:基于梯度的霍夫变换是对原始霍夫变换的改进。利用它可以大大减少计算量,并使用梯度信息使检测更加准确。本文的主要贡献在于,提出了一种基于Xilinx Virtex-7 FPGA且具有嵌入式DSP Slice和Block RAM的有效的基于梯度的Hough变换,以实现直线检测。我们使用13个DSP48E1 Slice,180个36Kbit的Block RAM和8个18Kbit的RAM来实现该电路。实验结果表明,该架构运行在260.061MHz,对于n×n灰度图像,我们的电路可以在n +(√2+ 2)n + 232个时钟周期内执行,包括梯度信息的计算。

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