guide to convolutional neural networks for computer vision

in the second layer.The formula is:The original image is mapped to, 0-255, here is generally set to 8, function h is a step function. , which indicates the number of filters in the second layer.For each output matrix of the first layer, it is divided into B block, calculate the histogram information of each block, then cascade the histogram features of each block, and finally get the Block expansion histogram feature:Overlapping and non-overlapping block patterns can also be used for histogram

modulation gate, memory cell and output gate.Each of the LSTM layers have hidden states.3. Loss function and optimizationThe conditional probability of the poses Yt = (y1, ..., YT) given a sequence of monocular RGB images Xt = (x1, ..., XT) up to time t.Optimal Parameters:The hyperparameters of the Dnns:(pk,φk) is the ground truth pose.(p?k,φ?k) is the estimated ground truth pose.κ (the experiments) is a scale factor to balance the weights of positions and orientations.N is the number of sample

of the word vector effect is also possible.Channel (Channels): An image can take advantage of (R, G, B) as a different channel, while the input channel of the text is usually a different way of embedding (such as Word2vec or glove), In practice, the use of static word vectors and fine-tunning-word vectors as different channel methods are also used.One dimensional convolution (conv-1d): The image is a two-dimensional data, the word vector expression of the text is one-dimensional data, so in tex

ImageNet classification with deep convolutional neural Networks reading notes(after deciding to read a paper each time, the notes are recorded on the blog.) ）This article, published in NIPS2012, was Hinton and his students, in response to doubts about deep learning, used deep learning for imagenet, the largest database of image recognition, and eventually achieve

convolution layer of the error-sensitive items, because the reverse propagation when the output is smaller than the input, so the gradient at the time of transmission and traditional BP algorithm, So how to get the error-sensitive item of convolutional layer is the problem to consider. The third problem is to consider the pooling layer below the convolution layer, this is because we want to get the pooling layer error sensitivity, relying on the conv

alexnet Summary Notes Thesis: "Imagenet classification with Deep convolutional neural" 1 Network Structure The network uses the logic regression objective function to obtain the parameter optimization, this network structure as shown in Figure 1, a total of 8 layer network: 5 layer of convolution layer, 3 layer full connection layer, and the front is the image input layer. 1) convolution layer A total of 5-

I. Documentation names and authorsconvolutional neural Networks at Constrained time COST,CVPR two. Reading timeJune 30, 2015Three. Purpose of the documentThe author hopes to improve the accuracy of CNN by modifying the model depth and the parameters of the convolution template, while maintaining the computational complexity. Through a lot of experiments, the author finds the importance of different paramete

], nb_conv[2], nb_conv[2]), padding='same', activation='Relu', Kernel_regularizer=regularizers.l2 (0.01) ) (C05) c07= Batchnormalization (epsilon=1e-06, momentum=0.9, weights=None) (C06) C08= Spatialdropout3d (0.5) (c07) c09=Flatten () (C08) c010= Dense (+, kernel_initializer='Glorot_normal', activation='Relu', Kernel_regularizer=regularizers.l2 (0.01) ) (c09) c011= Dense (nb_classes, kernel_initializer='Glorot_normal', Kernel_regularizer=regularizers.l2 (0.01) ) (c010) c012= Activation ('Softma

set, the KL distance is the indicator that describes the diversity, thus reducing the amount of computation. Traditional deep learning will need to do before the training of data enhancement, each sample is equal; This article contains some data enhancement not only does not play a good role, but brings the noise, it needs to do some processing, but also some of the data does not need to be enhanced, which reduces noise and saves calculation. Qa Q: Why did the active learning not b

. We use the cublas. lib and curand. Lib libraries. One is matrix calculation and the other is random number generation. I applied for all the memory I needed at one time. After the program started running, there was no data exchange between the CPU and GPU. This proved to be very effective. The program performance is about dozens of times faster than the original C language version (if the network is relatively large, it can reach a speed-up ratio of about one hundred times ). Each EPOS uses 16

Minimalist notes Deepid-net:object detection with deformable part Based convolutional Neural Networks Paper Address Http://www.ee.cuhk.edu.hk/~xgwang/papers/ouyangZWpami16.pdf This is the CUHK Wang Xiaogang group 2017 years of a tpami, the first hair in the CVPR2015, increased after the experiment to cast the journal, so the contrast experiment are some alexnet,

Learning Goals: Understand the challenges of object Localization, Object Detection and Landmark finding Understand and implement Non-max suppression Understand and implement intersection over union Understand how we label a dataset for an object detection application Remember the vocabulary of object Detection (landmark, anchor, bounding box, grid, ...) "Chinese Translation"Learning Goals: Understand The challenges of object positioning, target detection, and

In both CNN (1) and CNN (2) Two articles, the main explanation is CNN's basic architecture and weight sharing (Weight sharing), this article focuses on the convolution part.First, before convolution, our data is 4D tensor (width,height,channels,batch), which was mentioned in CNN (1): Architecture. The passage here, and the previously mentioned depth, is a concept, such as a grey scale image with a channel number of 1;RGB graphs of 3.In fact, Kernel also has channel, and its number is the same as

ImageNet classification with deep convolutional neural Networks reading notes(2013-07-06 22:16:36) reprint Tags: deep_learning imagenet Hinton Category: machine learning (after deciding to read a paper each time, the notes are recorded on the blog.) )This article, published in NIPS2012, is Hinton and his students are using deep le

of the "object" in the "the position with the maximum score Use a cost function this can explicitly model multiple objects present in the image. Because there may be many objects in the graph, the multi-class classification loss is not applicable. The author sees this task as multiple two classification questions, loss function and classification score as followsTrainingMuti-scale TestExperimentClassification MAP on VOC test: +3.1% compared with [56] MAP on VOC test: +7.

Wang, Min, Baoyuan Liu, and Hassan Foroosh. "Factorized convolutional neural Networks." ArXiv preprint (2016). This paper focuses on the optimization of the convolution layer in the deep network, which has three unique features:-Can be trained directly . You do not need to train the original model first, then use the sparse, compressed bits and so on to compress.

. The MS Coco database was founded by Microsoft, and its challenge is currently run by a consortium of academic institutions in academia.The two challenges have different priorities: ImageNet tends to evaluate the ability to identify significant objects in an image, while Ms Coco tends to evaluate the ability to identify various objects in complex scenes. The ability to win a championship in two world-class competitions is enough to explain that the research team's technological breakthroughs ar

Study, the use of convolutional neural network has been a long time, the period has been based on the Caffe framework of the Jiayanqing great God to study other people's model, or in the boring time in the same way as the fortune-telling, eyes micro-closed, bobbing, the mouth occasionally leaking a few syllables, a long time DIY out of a think of a lot of models, Then run for a while, of course, the result