Walid Aly

21 Questions 12 Answers 0 Followers

Questions related from Walid Aly

When do I use Background Subtraction Methods for object detection in images?

I am using Java and OpenCv as tools to detect object in still images and videos.

09 September 2016 1,084 2 View

Where can I find a nice tensorflow tutorial?

I need to implement or download an algorithm for Vehicle detection in images.

09 September 2016 5,851 4 View

What is the best introductory resource to learn about Deep Learning?

I am already familiar with machine learning, Python and Neural Networks.

09 September 2016 3,903 1 View

How will be the dimension of the input training dataset for a convolution neural network (1000 images, each image is 3 channel and 32px by 32px)?

will it be 2d as (1000)* (3*32*32)? or will it be 4d as (1000)* (3) (32)(32)?

09 September 2016 7,786 1 View

In Keras, How can I extract the exact location of the detected object (or objects) within image that includes a background?

If I will test my classifier using images that include the target object in an image among other items. I assume a sliding window is used.

09 September 2016 7,764 6 View

How can I prepare the labels of my binary classification problem in keras?

this is code I used #prepare labels...

09 September 2016 953 2 View

How can I implement the sliding window using Keras to detect multi objects in a single frame?

I already built a classifier to detect a single vehicle in a frame.

09 September 2016 2,400 0 View

How does object detection in images works?

Detecting Vehicles and pedestrians, how the classifier is trained? How exactly preprocessing of images is applied?

08 August 2016 881 6 View

If information gain is used to rank features, what is the typical way to build a subset of features based on this ranking?

These features will be input to a classifier

01 January 2014 9,047 2 View

How can I download cifar dataset as images directly?

https://www.cs.toronto.edu/~kriz/cifar.html

01 January 1970 1,264 3 View

What is the rule of thumb for ratio of positive to negative samples in a training dataset for best image classification?

should be like 50% each or should negative size be multiple of positve size?

01 January 1970 611 0 View

Which Image resolution should I use for training for deep neural network?

I found that CIFAR dataset is 32px*32px, MIT 128px*128px and Stanford 96px*96px. if I would like to use different resolutions, can I just resize them to the smaller?

01 January 1970 6,527 6 View

Where can I find a nice tutorial for Regional based Convolution neural Network?

http://cs231n.stanford.edu/slides/winter1516_lecture8.pdf was not clear enough for me to start implementing or have a clear understanding

01 January 1970 1,669 0 View

How can I use python for image segmentation efficiently ?

I am doing machine learning for image classification, now I am moving to object detection. I need to segment a whole image and pass the resulting blob to my classifiers. I know about SSD,Yolo and...

01 January 1970 1,850 2 View

How does illumination affect the values of pixels in an image?

I am doing machine learning for Object Detection, my data set would never cove all day to consider the effect of illumination

01 January 1970 7,816 6 View

During Machine learning for object Detection, How can I simulate the effect of different day illumination on my training dataset?

I have my vehicle training dataset, but in real situation the vehicles are subjected to different intensity of light , how can I simulate or remove the effect of light?

01 January 1970 872 5 View

Can someone clearly explain how an SSD single shot multibox detector works?

1-During Prediction, how is the process actually applied. would each bounding box with different aspect ratio be allowed to output a prediction and an offset? 2-How actually is the convolution...

01 January 1970 6,581 0 View

How can I code OpenCV to use GPU using Python?

I am using OpenCV3.2

01 January 1970 1,560 0 View

What is wrong when you have high false positive and low (or even zero) false negative in your confusion matrix?

TN=1686 FP=1249 FN=0 TP=1841

01 January 1970 8,228 0 View

How can I choose the working version from my 2 python installations of OpenCV2.4 and OpenCV3.0?

I have both versions installed on my Mac.

01 January 1970 6,536 0 View

How can I use Deep learning to create / find easily distinguished images that can be used as markers?

I need to create labels that Computer vision can easily detect and classify

01 January 1970 2,255 4 View