Flame detection is a research hotspot in industrial production,and it has been widely used in various fields.Based on the ignition and combustion video sequence,this paper aims to improve the accuracy and unintuitive ...Flame detection is a research hotspot in industrial production,and it has been widely used in various fields.Based on the ignition and combustion video sequence,this paper aims to improve the accuracy and unintuitive detection results of the current flame detection methods of gasifier and industrial boiler.A furnace flame detection model based on support vector machine convolutional neural network(SCNN)is proposed.This algorithm uses the advantages of neural networks in the field of image classification to process flame burning video sequences which needs detailed analysis.Firstly,the support vector machine(SVM)with better small sample classification effect is used to replace the Softmax classification layer of the convolutional neural network(CNN)network.Secondly,a Dropout layer is introduced to improve the generalization ability of the network.Subsequently,the area,frequency and other important parameters of the flame image are analyzed and processed.Eventually,the experimental results show that the flame detection model designed in this paper is more accurate than the CNN model,and the accuracy of the judgment on the flame data set collected in the gasifier furnace reaches 99.53%.After several ignition tests,the furnace flame of the gasifier can be detected in real time.展开更多
Neuromorphic computing is considered to be the future of machine learning,and it provides a new way of cognitive computing.Inspired by the excellent performance of spiking neural networks(SNNs)on the fields of low-pow...Neuromorphic computing is considered to be the future of machine learning,and it provides a new way of cognitive computing.Inspired by the excellent performance of spiking neural networks(SNNs)on the fields of low-power consumption and parallel computing,many groups tried to simulate the SNN with the hardware platform.However,the efficiency of training SNNs with neuromorphic algorithms is not ideal enough.Facing this,Michael et al.proposed a method which can solve the problem with the help of DNN(deep neural network).With this method,we can easily convert a well-trained DNN into an SCNN(spiking convolutional neural network).So far,there is a little of work focusing on the hardware accelerating of SCNN.The motivation of this paper is to design an SNN processor to accelerate SNN inference for SNNs obtained by this DNN-to-SNN method.We propose SIES(Spiking Neural Network Inference Engine for SCNN Accelerating).It uses a systolic array to accomplish the task of membrane potential increments computation.It integrates an optional hardware module of max-pooling to reduce additional data moving between the host and the SIES.We also design a hardware data setup mechanism for the convolutional layer on the SIES with which we can minimize the time of input spikes preparing.We implement the SIES on FPGA XCVU440.The number of neurons it supports is up to 4000 while the synapses are 256000.The SIES can run with the working frequency of 200 MHz,and its peak performance is 1.5625 TOPS.展开更多
目前网购平台的搜索对象仍以文字为主,致使搜索效率低下。文章以广受女性欢迎的浅口高跟鞋为例,对利用图片进行款式自动识别的技术进行探索。以网购平台上收集的3类浅口高跟鞋(粗跟、细跟、坡跟)共900张图片(每款随机抽取200张作为训练...目前网购平台的搜索对象仍以文字为主,致使搜索效率低下。文章以广受女性欢迎的浅口高跟鞋为例,对利用图片进行款式自动识别的技术进行探索。以网购平台上收集的3类浅口高跟鞋(粗跟、细跟、坡跟)共900张图片(每款随机抽取200张作为训练集,剩余100张作为测试集)为研究对象,然后利用深度学习中的Faster R CNN检测模型对浅口高跟鞋款式进行训练和测试识别。结果表明:无论以鞋跟为目标区域,还是以整只鞋为检测区域,利用该模型都能对浅口高跟鞋图像实现良好的款式识别,准确率可达94%以上,且不用经过人为特征提取,方便可行;Faster R CNN检测模型的总体精度和检测速度比R CNN、SPP-Net、FAST R CNN更优。展开更多
The paper reviews and extends an emerging body of theoretical results on deep learning including the conditions under which it can be exponentially better than shallow learning. A class of deep convolutional networks ...The paper reviews and extends an emerging body of theoretical results on deep learning including the conditions under which it can be exponentially better than shallow learning. A class of deep convolutional networks represent an important special case of these conditions, though weight sharing is not the main reason for their exponential advantage. Implications of a few key theorems are discussed, together with new results, open problems and conjectures.展开更多
基金Supported by Shaanxi Province Key Research and Development Project(No.2021GY-280)Shaanxi Province Natural Science Basic ResearchProgram Project(No.2021JM-459)National Natural Science Foundation of China(No.61834005,61772417,61802304,61602377,61634004)。
文摘Flame detection is a research hotspot in industrial production,and it has been widely used in various fields.Based on the ignition and combustion video sequence,this paper aims to improve the accuracy and unintuitive detection results of the current flame detection methods of gasifier and industrial boiler.A furnace flame detection model based on support vector machine convolutional neural network(SCNN)is proposed.This algorithm uses the advantages of neural networks in the field of image classification to process flame burning video sequences which needs detailed analysis.Firstly,the support vector machine(SVM)with better small sample classification effect is used to replace the Softmax classification layer of the convolutional neural network(CNN)network.Secondly,a Dropout layer is introduced to improve the generalization ability of the network.Subsequently,the area,frequency and other important parameters of the flame image are analyzed and processed.Eventually,the experimental results show that the flame detection model designed in this paper is more accurate than the CNN model,and the accuracy of the judgment on the flame data set collected in the gasifier furnace reaches 99.53%.After several ignition tests,the furnace flame of the gasifier can be detected in real time.
基金The work was supported by the HeGaoJi Program of China under Grant Nos.2017ZX01028103-002 and 2017ZX01038104-002the National Natural Science Foundation of China under Grant No.61472432.
文摘Neuromorphic computing is considered to be the future of machine learning,and it provides a new way of cognitive computing.Inspired by the excellent performance of spiking neural networks(SNNs)on the fields of low-power consumption and parallel computing,many groups tried to simulate the SNN with the hardware platform.However,the efficiency of training SNNs with neuromorphic algorithms is not ideal enough.Facing this,Michael et al.proposed a method which can solve the problem with the help of DNN(deep neural network).With this method,we can easily convert a well-trained DNN into an SCNN(spiking convolutional neural network).So far,there is a little of work focusing on the hardware accelerating of SCNN.The motivation of this paper is to design an SNN processor to accelerate SNN inference for SNNs obtained by this DNN-to-SNN method.We propose SIES(Spiking Neural Network Inference Engine for SCNN Accelerating).It uses a systolic array to accomplish the task of membrane potential increments computation.It integrates an optional hardware module of max-pooling to reduce additional data moving between the host and the SIES.We also design a hardware data setup mechanism for the convolutional layer on the SIES with which we can minimize the time of input spikes preparing.We implement the SIES on FPGA XCVU440.The number of neurons it supports is up to 4000 while the synapses are 256000.The SIES can run with the working frequency of 200 MHz,and its peak performance is 1.5625 TOPS.
文摘目前网购平台的搜索对象仍以文字为主,致使搜索效率低下。文章以广受女性欢迎的浅口高跟鞋为例,对利用图片进行款式自动识别的技术进行探索。以网购平台上收集的3类浅口高跟鞋(粗跟、细跟、坡跟)共900张图片(每款随机抽取200张作为训练集,剩余100张作为测试集)为研究对象,然后利用深度学习中的Faster R CNN检测模型对浅口高跟鞋款式进行训练和测试识别。结果表明:无论以鞋跟为目标区域,还是以整只鞋为检测区域,利用该模型都能对浅口高跟鞋图像实现良好的款式识别,准确率可达94%以上,且不用经过人为特征提取,方便可行;Faster R CNN检测模型的总体精度和检测速度比R CNN、SPP-Net、FAST R CNN更优。
基金supported by the Center for Brains,Minds and Machines(CBMM),NSF STC award CCF(No.1231216),and ARO(No W911NF-15-1-0385)
文摘The paper reviews and extends an emerging body of theoretical results on deep learning including the conditions under which it can be exponentially better than shallow learning. A class of deep convolutional networks represent an important special case of these conditions, though weight sharing is not the main reason for their exponential advantage. Implications of a few key theorems are discussed, together with new results, open problems and conjectures.
