基于开放运算语言加速的数字全息卷积重建算法实现

罗洪艳; 周珞一; 赵震; 郭洪; 冯晓波

doi:10.11999/JEIT210693

基于开放运算语言加速的数字全息卷积重建算法实现

doi: 10.11999/JEIT210693

罗洪艳^{1, 2, ,},
周珞一¹,
赵震¹,
郭洪¹,
冯晓波¹

1.
重庆大学生物工程学院重庆 400044
2.
生物流变科学与技术教育部重点实验室重庆 400044

基金项目: 国家自然科学基金(Z20190224)，重庆市研究生科研创新项目(CYS19056)

详细信息

作者简介:
罗洪艳：女，副教授，研究方向为医学图像处理

周珞一：女，硕士生，研究方向为医学信号处理及应用

赵震：男，硕士，研究方向为医学图像处理

郭洪：女，硕士生，研究方向为生物医学信息处理

冯晓波：男，硕士生，研究方向为生物医学传感器

通讯作者:
罗洪艳　h.y.luo@cqu.edu.cn

中图分类号: O438.1
计量
- 文章访问数: 351
- HTML全文浏览量: 237
- PDF下载量: 56
- 被引次数: 0
出版历程
- 收稿日期: 2021-07-12
- 修回日期: 2022-07-04
- 网络出版日期: 2022-07-05
- 刊出日期: 2022-09-19

Implementation of Digital Holographic Convolutional Reconstruction Algorithm Based on Open Computing Language Acceleration

1.
Institute of Bioengineering, Chongqing University, Chongqing 400044, China
2.
Key Laboratory of Bioheological Science and Technology, Chongqing 400044, China

Funds: The National Natural Science Foundation of China (Z20190224), The Graduate Research and Innovation Foundation of Chongqing, China (CYS19056)

摘要

摘要: 针对数字全息重建算法计算速度慢、实时应用能力弱以及现有GPU加速策略跨平台移植性差等问题，该文提出一种利用开放运算语言(OpenCL)架构提高数字全息重建算法执行效率的方案。该方案充分利用OpenCL架构的异构协同计算能力，对数字全息卷积重建算法进行CPU+GPU的异构运行设计，并采用数据并行模式编程实现。针对不同分辨率数字全息图、不同GPU加速平台的测试结果表明，该加速策略的平均执行时间均比CPU低1个数量级，最高总加速比达到54.2，并行运算加速比甚至高达94.7，且具有规模增长性及良好的跨平台特性，加速效率显著，更加适用于数字全息技术的工程化实现及实时性应用场合。
- 数字全息 /
- 重建算法 /
- 开放运算语言 /
- 并行计算
Abstract: In view of the problems of slow calculation speed of digital holographic reconstruction algorithm, weak real-time application ability and poor cross-platform portability of existing GPU acceleration strategies, a scheme is proposed based on Open Computing Language (OpenCL) architecture to improve the execution efficiency of digital holographic reconstruction algorithm. In more details, the heterogeneous collaborative computing capabilities of the OpenCL architecture is fully used to design a CPU+GPU heterogeneous operation for the digital holographic convolutional reconstruction algorithm, which is programmed in the data parallel mode. The tests are carried out on the digital holograms in various image resolutions and on the different GPU acceleration platforms. The results indicate that the average execution time of this acceleration strategy is approximately an order of magnitude lower than that of the CPU, the highest total acceleration ratio is 54.2, and the parallel computing acceleration ratio even reaches up to 94.7. Characterized by a scale growth, good cross-platform portability and significant acceleration efficiency, it is more suitable for the engineering realization of digital holographic technology, especially in the real-time applications.
- Digital holography /
- Reconstruction algorithm /
- Open Computing Language (OpenCL) /
- Parallel computing

HTML全文

图 1 基于CPU+GPU架构的卷积加速重建算法流程图

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图 2 卷积加速重建算法的GPU实现示意图

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图 3 20 μm聚苯乙烯微粒的同轴数字全息图

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图 4 全幅重建结果与局部区域的显微镜对比图

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图 5 不同加速平台的加速比(OpenCL版本)

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图 6 不同加速平台的内部耗时百分比(OpenCL版本)

下载: 全尺寸图片幻灯片

表 1 两种GPU加速平台参数

平台	型号	频率	内存	流处理单元
加速平台1	CPU1：AMD Ryzen 5 3600	4.1 GHz	16 GB
加速平台1	GPU1：NVIDIA GeForce GTX 1660 SUPER	1530 MHz	6 GB	1408
加速平台2	CPU2：AMD Ryzen 7 Mobile	1.8 GHz	16 GB
加速平台2	GPU2：AMD Radeon(TM) Graphics	1750 MHz	512 MB	512

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表 2 不同CPU与GPU加速平台的全息重建总执行时间对比

序号	分辨率(像素)	总执行时间(ms)
序号	分辨率(像素)	CPU1	加速平台1 (OpenCL)	加速平台1 (CUDA)	CPU 2	加速平台2
a	512×384	239	12	10	421	71.3
b	1024×768	828	24	16.7	1475	138
c	1536×1152	1822	39	30	3045	273.6
d	2048×1536	3208	66.3	50	5495	445.9
e	2560×1920	4989	98.4	70	8758	739
f	3072×2304	7171	132.3	97	11334	1147.4

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表 3 不同GPU加速平台下全息重建的分项执行时间对比(OpenCL版本)(ms)

序号	分辨率(像素)	串行运算用时		数据传输用时		并行运算用时
序号	分辨率(像素)	CPU1	CPU2	CPU1-GPU1	CPU2-GPU2	GPU1	GPU2
a	512×384	1.3	3.3	0.7	2	10	66
b	1024×768	5	15.3	0.7	3.7	18.3	119
c	1536×1152	12.3	33.3	2	11	24.7	229.3
d	2048×1536	20.3	56.3	5	14.3	41	375.3
e	2560×1920	32.7	78	5.7	19.7	60	641.3
f	3072×2304	47.3	103.7	9.3	33	75.7	1010.7

下载: 导出CSV

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