以加拿大Dalsa公司的全帧CCD图像传感器FTF4027M为例,在研究了全帧CCD结构和驱动时序的基础上,提出了基于现场可编程逻辑门阵列(FPGA)的驱动脉冲设计方法。选用FPGA作为硬件设计平台,使用VHDL语言对驱动时序发生器进行了硬件描述,采用Qu...以加拿大Dalsa公司的全帧CCD图像传感器FTF4027M为例,在研究了全帧CCD结构和驱动时序的基础上,提出了基于现场可编程逻辑门阵列(FPGA)的驱动脉冲设计方法。选用FPGA作为硬件设计平台,使用VHDL语言对驱动时序发生器进行了硬件描述,采用Quartus II 5.0对所设计的驱动时序发生器进行了仿真,针对Altera公司的FPGA器件EP1C3T144C8进行了适配。实验结果表明,设计的驱动电路可以满足其全帧CCD的各项驱动要求并且具有设计灵活、硬件调试简单的优点。展开更多
This paper expounds the application of machine vision theory, composition and technology in the sow breeding process monitoring, auxiliary judgment, and growth of young monitoring. It also points out the problems and ...This paper expounds the application of machine vision theory, composition and technology in the sow breeding process monitoring, auxiliary judgment, and growth of young monitoring. It also points out the problems and deficiency in the application of machine vision technology, and discusses the development trends and prospects of the machine vision technology in agricultural engineering. The application of machine vision is a process in which dynamic original image from the sows estrus is collected with a CCD camera, and then black and white ash three binarization image in adjournments of the threshold value is made by using image acquisition card, through the median filtering and gray processing. The practitioners can extract respective image information from the sow estrus, pregnancy and birth delivery. Applying the computer vision system in the sow farm effectively enhances the practitioners’ objectivity and precision in their efforts to assess the whole process of sow birth delivery.展开更多
A digital still camera image processing system on a chip, different from the video camera system, is pre- sented for mobile phone to reduce the power consumption and size. A new color interpolation algorithm is propos...A digital still camera image processing system on a chip, different from the video camera system, is pre- sented for mobile phone to reduce the power consumption and size. A new color interpolation algorithm is proposed to enhance the image quality. The system can also process fixed patten noise （FPN） reduction, color correction, gamma correction, RGB/YUV space transfer, etc. The chip is controlled by sensor regis- ters by inter-integrated circuit （I2C） interface. The voltage for both the front-end analog and the pad cir- cuits is 2.8 V, and the volatge for the image signal processing is 1.8 V. The chip running under the external 13.5-MHz clock has a video data rate of 30 frames/s and the measured power dissipation is about 75 roW.展开更多
为解决草莓自动化夹持中的损伤问题,该研究提出一种基于视触觉融合的接触力精确感知方法。设计了集成视触觉传感器的夹爪,并构建了AFE-Unet3+(area and force estimation unet3+)神经网络。该网络基于Unet3+网络,融合高效局部注意力机制...为解决草莓自动化夹持中的损伤问题,该研究提出一种基于视触觉融合的接触力精确感知方法。设计了集成视触觉传感器的夹爪,并构建了AFE-Unet3+(area and force estimation unet3+)神经网络。该网络基于Unet3+网络,融合高效局部注意力机制(efficient local attention,ELA),构建多尺度结构相似性损失函数(multi-scale structural similarity index,MS-SSIM),实现了对接触区域和力值的同步估计。AFE-Unet3+与Unet3+及CANFnet相比,AFE-Unet3+模型在接触区域预测的交并比(intersection over union,IoU)上分别提升了0.01和0.06;在法向力预测的平均绝对误差(mean absolute error,MAE)上分别降低了0.057和0.63,且力值回归的平均校正决定系数(adjusted coefficient of determination,R~2)高达0.976。对3个品种草莓的损伤阈值试验测得,其安全夹持力范围为0.3~0.6 N,试验结果表明所设计的视触觉夹爪可为草莓无损抓取提供有效的力信息支持。展开更多
文摘以加拿大Dalsa公司的全帧CCD图像传感器FTF4027M为例,在研究了全帧CCD结构和驱动时序的基础上,提出了基于现场可编程逻辑门阵列(FPGA)的驱动脉冲设计方法。选用FPGA作为硬件设计平台,使用VHDL语言对驱动时序发生器进行了硬件描述,采用Quartus II 5.0对所设计的驱动时序发生器进行了仿真,针对Altera公司的FPGA器件EP1C3T144C8进行了适配。实验结果表明,设计的驱动电路可以满足其全帧CCD的各项驱动要求并且具有设计灵活、硬件调试简单的优点。
文摘This paper expounds the application of machine vision theory, composition and technology in the sow breeding process monitoring, auxiliary judgment, and growth of young monitoring. It also points out the problems and deficiency in the application of machine vision technology, and discusses the development trends and prospects of the machine vision technology in agricultural engineering. The application of machine vision is a process in which dynamic original image from the sows estrus is collected with a CCD camera, and then black and white ash three binarization image in adjournments of the threshold value is made by using image acquisition card, through the median filtering and gray processing. The practitioners can extract respective image information from the sow estrus, pregnancy and birth delivery. Applying the computer vision system in the sow farm effectively enhances the practitioners’ objectivity and precision in their efforts to assess the whole process of sow birth delivery.
基金supported by the National"863"Program of China under Grant No.2008AA01Z130
文摘A digital still camera image processing system on a chip, different from the video camera system, is pre- sented for mobile phone to reduce the power consumption and size. A new color interpolation algorithm is proposed to enhance the image quality. The system can also process fixed patten noise （FPN） reduction, color correction, gamma correction, RGB/YUV space transfer, etc. The chip is controlled by sensor regis- ters by inter-integrated circuit （I2C） interface. The voltage for both the front-end analog and the pad cir- cuits is 2.8 V, and the volatge for the image signal processing is 1.8 V. The chip running under the external 13.5-MHz clock has a video data rate of 30 frames/s and the measured power dissipation is about 75 roW.
文摘为解决草莓自动化夹持中的损伤问题,该研究提出一种基于视触觉融合的接触力精确感知方法。设计了集成视触觉传感器的夹爪,并构建了AFE-Unet3+(area and force estimation unet3+)神经网络。该网络基于Unet3+网络,融合高效局部注意力机制(efficient local attention,ELA),构建多尺度结构相似性损失函数(multi-scale structural similarity index,MS-SSIM),实现了对接触区域和力值的同步估计。AFE-Unet3+与Unet3+及CANFnet相比,AFE-Unet3+模型在接触区域预测的交并比(intersection over union,IoU)上分别提升了0.01和0.06;在法向力预测的平均绝对误差(mean absolute error,MAE)上分别降低了0.057和0.63,且力值回归的平均校正决定系数(adjusted coefficient of determination,R~2)高达0.976。对3个品种草莓的损伤阈值试验测得,其安全夹持力范围为0.3~0.6 N,试验结果表明所设计的视触觉夹爪可为草莓无损抓取提供有效的力信息支持。
