Questions tagged [image-processing]
For questions related to image processing (in the context of AI).
29
questions
3
votes
3answers
83 views
Convolutional Neural Network: does each filter in each convolution layer create a new image?
Say I have a CNN with this structure:
input = 1 image (say, 30x30 RGB pixels)
first convolution layer = 10 5x5 convolution filters
second convolution layer = 5 3x3 convolution filters
one dense layer ...
0
votes
0answers
11 views
Do backgroundSubtractor functions in opencv only detect moving objects?
There are some backgroundsubtractor functions in opencv like backgroundsubtractormog2 , backgroundsubtractorGMG and ... . It seems that these functions only detect moving objects in a video.
But I ...
2
votes
1answer
21 views
Can I shuffle image channel data as a form of data augmentation?
If I want to augment my dataset, is shuffling or permuting the channels (RGB) of an image a sensible augmentation for training a CNN? IIRC, the way convolutions work is that a kernel operates over ...
0
votes
1answer
61 views
How can I detect moving objects in a video by OpenCV without using deep learning techniques?
I want to detect moving objects in a surveillance video without using machine learning tools (like neural networks).
Is there a simple way in the OpenCV library? What is an efficient solution for this ...
7
votes
1answer
85 views
Deep learning for bitmap tracing: extract simple svg paths from bitmaps
I need an algorithm to trace simple bitmaps which only contain paths with a given stroke width.
It is obviously very easy to generate bitmaps from vector paths, so creating data for a machine ...
0
votes
0answers
6 views
How to measure object size from the disparity map using CNN?
I am a student learning about image processing using CNN. I want to learn how to measure the object size from the disparity map obtained from left and right stereo images.
2
votes
1answer
38 views
How to calculate the size of a 3d object from an image?
I am wondering how to calculate the size of a 3d object in an image without knowing the focal length of the camera but the distance from the camera to the object.
3
votes
2answers
90 views
How can I measure an object using Computer Vision and neural network techniques?
I am studying about Computer Vision around 2-3 months long. Recently, I have an idea to conduct a research about computer vision and Artificial neural networks. The idea is I want to make an automatic ...
2
votes
0answers
21 views
Which neural network algorithms can be used to map motion vectors in image processing?
I'm working on finding out the motion vectors of objects in images. The inputs are the images of objects in motion. The outputs of neural network are the object name, direction of object vector and ...
1
vote
1answer
92 views
How to Extract Information from the Image
I'm trying to extract some particular information from the image(png).
I tried to extract the text using the below code
...
1
vote
2answers
80 views
Necessity of GPUs and hardware minimum specs for Deep Learning?
I’m doing some research into what hardware I need and what hardware I have available in college for a final year project.
The project is designing a self driving car/computer vision system inside a ...
0
votes
0answers
37 views
Which metrics of COCO API are suitable for object detection
These days I train a person detector and I use COCO API to evaluate my model. It uses Recall and Precision to evaluate a detection task.
It's output is something like this:
...
1
vote
0answers
12 views
CBIR Evaluation on contextually different data
How good would a CBIR system trained on a dataset, for example, DELF, trained on the Google Landmarks dataset, perform when evaluated on a contextually different dataset such as the WANG or the COREL ...
3
votes
1answer
53 views
Video engagement analysis with deep learning
I am trying to rank video scenes/frames based on how appealing they are for a viewer. Basically, how "interesting" or "attractive" a scene inside a video can be for a viewer. My final goal is to ...
4
votes
1answer
42 views
Turn photos right-side up?
I'm looking for either an existing AI app or a pre-trained NN that will tell me if a photograph is right-side up or not. I want to use this to create an application that automatically rotates photos ...
2
votes
1answer
35 views
How to generate the original image from feature set?
We all know that using CNN, or even simpler functions, like CLD or EHD, we can generate a set of features out of images.
Is there any ways or approaches that given a set of features, we can somehow ...
0
votes
0answers
12 views
Video multi context or action annotation / labeling
I've a lot of collected driving data, including video data streams. In order to filter or use them for DNN training, the video files must be annotated / labeled. In contrast to object detection or ...
2
votes
2answers
52 views
Why do we get a three-dimensional output after a convolutional layer?
In a convolutional neural network, when we apply the convolution on a $5 \times 5$ image with $3 \times 3$ kernel, with stride $1$, we should get only one $4 \times 4$ as output. In most of the CNN ...
3
votes
1answer
58 views
Aesthetics analysis with deep learning
I'm trying to score video scenes in terms of aesthetics and cinematography features. Basically, how "interesting" a scene or video frame can be for a viewer. Simpler, how attractive a scene is. My ...
0
votes
0answers
21 views
How to recognize arbitrary symbols within an image?
I want to investigate whether I could use AI to count arbitrary symbols on an image.
Here's an example image like one I would be talking about, I wanted to know if there's an algorithm or an ...
2
votes
0answers
18 views
How can I detect fast and slow motion in videos?
I'm trying to detect if a given video shot is fast or slow motion. Basically, I need to calculate a "video motion" score in a given video sequence, meaning how fast or slow motion the video is. For ...
2
votes
1answer
33 views
Tweaking a CNN for large number of input channels
I am using a CNN for function approximation using geospatial data.
The input of the function I am trying to approximate consists of all the spatial distances between N location on a grid and all the ...
2
votes
2answers
60 views
How should we pad an image to be fed in a CNN?
As everyone experienced in deep learning might know, in an image classification problem we normally add borders to images then resize it to the input size of a CNN network. The reason of doing this is ...
3
votes
1answer
23 views
Is this technique image processing or computer vision?
If I use my mobile camera on a signboard or announcement board on a road or in a street (like the one attached in photo) where the message is written in Russian and my mobile shows me that message in ...
3
votes
1answer
71 views
What is the difference between image processing and computer vision?
What is the difference between image processing and computer vision? They are apparently both used in artificial intelligence.
0
votes
1answer
244 views
How to Mask an image using Numpy/OpenCV?
I am detecting wheels with a deep learning algorithm. The algorithm gives me the coordinates of those rectangles. I want to keep data that is in the rectangles of the image. I created rectangles as a ...
1
vote
0answers
29 views
What models and algorithms are used in commercial vehicle re-identification tasks?
Due to the fast-growing applications of AI technologies applied to vehicle re-identification tasks, there have already been hot contests, such as the Nvidia AI challenge.
What algorithms or models ...
1
vote
0answers
59 views
How can I develop this ML/AI system that I want to use in my new mobile app?
I have an idea for a new mobile app. Here is what I want to accomplish using AI;
I want to get an image (png format), (maybe just byte data too), from my application (I'm developing with Unity3D/C#), ...
2
votes
1answer
182 views
How do I find the distance?
I am looking for solving this problem with training a deep learning-based classifier or image processing techniques.
ps. I exactly do not need to know how much is distance, I only need to know whether ...
