All Questions
Tagged with machine-learning image-processing
58 questions
2
votes
0
answers
54
views
Publishing image classifier as a website or to the cloud
I have made an image classifier by importing images and training my neural network, and I would like to share this classifier with my colleagues that don't have access to Mathematica.
However, if I ...
0
votes
1
answer
61
views
Creating an If function for the probabilities of the classes of images after using NetTrain
So I have 3 Classes the model can output after veiwing an image, at the moment it has a 70% accuracy, however this is not an issue as the plan is unless it's 85%+ sure on the Probability of the class ...
0
votes
0
answers
33
views
What is the network structure of Ademxapp Model A1 Trained on Cityscapes Data in the Mathematica?
I want to implement the model (Ademxapp Model A1 Trained on Cityscapes Data) on my data for segmentation, so I need the partial structure of this model, can anyone help?
- 195
3
votes
1
answer
118
views
Evaluating a questionnaire from image
I want to evaluate a questionnaire made at school. The survey is made on paper and I will scan it. So I have an image with all the questions (44 questions). What I am looking for is which number was ...
- 1,590
1
vote
1
answer
48
views
Why does ImageRecognition recognise some concepts in a list of concepts but not others?
Why can I successfully use an option list of the dog and cat entities with the ImageRecognition function but not use a similar option list for two aircraft entities
- 413
12
votes
4
answers
2k
views
Text recognition - extracting table of text from image
I want to extract table from the image bellow as a list of strings. I tried the following but it does not work.
...
- 25.1k
5
votes
1
answer
196
views
Sort symbols or characters by image complexity
As an example, I would like to sort the following characters by some sort of complexity measure:
...
- 6,027
3
votes
0
answers
184
views
TrainImageContentDetector gives very poor result on GPU compared to CPU
On the doc page of TrainImageContentDetector, there is an example of heart detector training. I tried this example with different TargetDevice and constrained the <...
- 17.4k
1
vote
0
answers
51
views
Is it possible to add new concept to ImageContents
I was hoping to use ImageContents to locate some specific objects in a series of images with a bounding box. However, ...
- 4,778
0
votes
1
answer
100
views
Extract ROIs - Machine learning - References
I want to try to extract ROIs from certain images using machine learning and neural networks , granted I know nothing about this field and it may not be the best way to do this, but the goal is to ...
- 1,014
13
votes
1
answer
618
views
Wolfram Neural Net Repository Questions
I was a research scientist in the machine learning team, and mostly involved with the neural net repository.
- 131
1
vote
1
answer
93
views
What is the default loss function used by the GradientBoostedTrees classifier?
I've used Classify[...] for a two class image classification problem which has yielded pretty good results. I let Mathematica select an algorithm for me and it picked a GBT model, everything looked ...
- 13
1
vote
1
answer
74
views
ClassifierMeasurements returns strange errors
I am following the example listed on this page ResNet 50 to train a custom classifier and inspect the outcome with ClassifierMeasurements. My training set has 443 images from more than 30 classes. The ...
- 739
3
votes
0
answers
35
views
extract dynamic values from video frames [duplicate]
I have a video recording the time and temperature during the experiment. I would like to ask whether it is possible for MMA to extract the above two values (highlighted in red boxes) from the frames ...
user34223
13
votes
0
answers
608
views
Trying to build a code to translate handwritten formulas using ML
I'm lazy writing equations in Latex so I want a code to translate handwritten equations. This question is related to an old experiment I'm reviewing during vacations, here. I'm trying to use ...
- 517
3
votes
2
answers
350
views
how to implement training for UNET implementation on Wolfram Neural Net Repository?
My question is with reference to the U-NET implementation present on the Wolfram Neural Net Repository
The construction notebook present on the page (link: http://...
- 9,060
1
vote
1
answer
156
views
Recognizing letters in grid with TextRecognize
Here is the test image:
You might recognize this as a Boggle board. I want to translate the image into a 4x4 array of letters. Not quite sure how to deal with rotated letters and ambiguous letters ...
- 335
21
votes
4
answers
564
views
Find best region to put text onto image
Given an image upon which you want to inset text, the question arises:
What is the best sub-region to place text?
For example, given a background image I want to find the rectangle in the image (...
- 31.8k
7
votes
1
answer
294
views
Decoding Music in Staff Notation using ImageIdentify
I wrote this Code fragment
Which is a E (quarter) note in Treble Clef. Instead Mathematica simply classified it as a "musical note"
Can we do better?
- 1,708
14
votes
3
answers
605
views
Importing a grid of numbers from an image (sudoku like)
Can anyone see a way to import a grid of numbers from
http://www.mit.edu/~puzzle/2019/puzzle/lantern_festival.html
into Mathematica? TextRecognize doesn't seem ...
- 6,697
5
votes
0
answers
292
views
Image-based reinforcement learning with neural networks
After seeing that "OpenAIGym" is not exactly supported on Windows and playing around with https://www.wolfram.com/language/12/neural-network-framework/train-an-...
- 406
1
vote
0
answers
53
views
Can LearnDistribution Train and Generate Images Without Defaulting To 256x256?
In spite of anything I try it seems the ConformImages[] function nested in the LearnDistribution[] function resizes images to 256x256.
If I convert an image into its "Data" representation before ...
- 21
5
votes
0
answers
105
views
Recognising people from photos
I have a large number (probably 10000) of personal photos taken over the last few years, a good proportion of which contain family members.
I'd like to put together a photo book of one family member,...
- 5,693
2
votes
2
answers
148
views
Find Probability that Image Is Text
I can find out whether an image is text:
ImageInstanceQ[img,Entity["Concept", "TextualMatter::m7642"]]
And if an image is most likely text, I can find out the ...
- 3,674
1
vote
0
answers
108
views
ImageRestyle yielding low-level errors even in example cases
the title covers it. I'm on v11.3.0.0 on a MacBook Pro running Mojave 10.14.2, and trying to run ImageRestyle seems to immediately throw a bunch of errors that aren't related to the input in an ...
- 1,092
10
votes
1
answer
182
views
Wha't the meaning of NaN in the descriptor of ImageKeypoints
Bug introduced in 10.3 or earlier and persisting through 11.3
...
- 8,649
8
votes
2
answers
172
views
Kernel shut down when use FindFaces with LBP Cascades
I found Mathematica can use OpenCV to improve face recognition in FindFaces: how to improve the results of the face recognition feature.
But I tried this way and the kernel crashed.
...
- 3,896
5
votes
1
answer
118
views
Why would a symmetric image have an asymmetric PoolingLayer-Gradient Image?
I have a symmetric image img. For simplicity, I would use the below image as my example:
...
- 3,509
5
votes
1
answer
324
views
How to cluster a set of images?
I have a set of images (imgset) as
Clearly, the classification list should be
...
- 3,405
6
votes
1
answer
374
views
FindFaces in Mathematica 11.3
I just upgraded to Mathematica 11.3. but now my FindFaces instructions do not work anymore.
I guess they changed the syntax in 11.3.
Here is the original code:
<...
- 3,093
2
votes
0
answers
71
views
Unable to create ClassifierMeasurements for NetGraph
I am trying to check the accuracy of a neural network by using ClassifierMeasurements. I take the MNIST as example:-
Code for setting
...
- 3,509
5
votes
1
answer
225
views
Single Neuron Dream Example (from Markus van Almsick's Presentation WTC 2017)
I'm teaching myself about Mathematica 11.3 Neural Net capabilities, and I can't get a demonstrably previously working example to work. I've been trying for quite a while without success.
In Markus ...
- 4,839
4
votes
0
answers
253
views
Image Segmentation: (Efficient Graph-Based)
This question is two-fold; First, it is about how to get the speed efficiency this algorithm should provide in Mathematica. In addition, it has a small question about the algorithm (Efficient Graph-...
- 5,442
2
votes
1
answer
196
views
Error using accuracy and ConfusionMatrixPlot of ClassifierMeasurements
EDIT: Here is the complete code that i have used:
...
- 23
7
votes
1
answer
772
views
Image Generator with a Neural Network (CIFAR-10)
As some of you may know, CIFAR-10 is a data base which has 60,000 images (which are 32x32 in size) of 10 different categories (airplane, dog, cat, frog, deer, bird, horse, ship, automobile and truck). ...
3
votes
0
answers
148
views
How to perform unsupervised texture classification?
Consider a texture mixture (img) from Brodatz.
I want to classify the five different texture patterns and segment the corresponding regions.
Following this,
I ...
- 3,405
23
votes
1
answer
943
views
How to ImageRestyle high-res images?
I’m running v12 now and ImageRestyle[] crashes for me on an image of size 1600 x 1200 pixels.
All the examples in the documentation use images around 500 x 500 or ...
- 31.8k
1
vote
0
answers
131
views
Reducing the size of the training data
My problem is that running Classify on my training data takes too long.
First I get 50,000 images such as car, cat, dog, hat, train, etc.
...
- 11
1
vote
0
answers
264
views
Rectangular object boundary detection
I would like to find the boundaries of an object:
I have looked that the YOLO algorithm but it looks like the results cut off parts of the object a lot. What kind of algorithm can I use to achieve ...
- 111
6
votes
2
answers
4k
views
Neural network: Line detection in Image
I am playing around with Mathematica's new Neural Network toolbox and am trying to teach a network to detect lines in quite noisy images.
An example Input image would look like the following:
The ...
- 1,535
9
votes
1
answer
152
views
Can Mathematica Neural Net make use of the REC file format for images like MXNet?
When using large set of images for training neural networks (>10000, size 250 x 250 each) the time to read the images is quite long.
My first approach was to use the DataSet functionality of ...
- 131
3
votes
1
answer
362
views
Custom NetEncoder for lower resolution image input in a pre-trained Inception network
I have come across this neat explanation on how to adjust a pre-trained Inception neural net to an arbitrary number of classes by truncating the top layers.
However, my input data does not come in $...
2
votes
0
answers
121
views
Detect numbers on the image [duplicate]
How to detect numbers on the following image
I tried:
img=Import["http://imgur.com/TDbn7sB.png"]
set = ImagePartition[img, Scaled[{1/20, 1/5}]] // Flatten
...
- 9,076
37
votes
2
answers
2k
views
Handwriting recognition with Mathematica
I am trying to teach Mathematica to read my handwriting. Since I don't want to ruin my reputation by showing my own handwriting, I am going to use a font called blackjack.
Lets say this is a ...
- 16k
5
votes
0
answers
144
views
Geographic text recognition [closed]
I would like to process an image from this Wikipedia page to get the structured data out
Like so
<| "New York" -> 28, ... |>
Not sure where to start.
- 31.8k
11
votes
3
answers
2k
views
Noise filtering in images with PCA
I have a stack of images (usually ca 100) of the same sample. The images have intrinsic variation of the sample, which is my signal, and a lot of statistical noise. I did a principal components ...
- 399
2
votes
0
answers
123
views
Google Cloud Vision vs ImageIdentify [closed]
Google has recently made their vision API publicly available (in beta release). I was hoping someone who has access to it could speak to how it compares with Mathematica's ...
- 31.8k
5
votes
1
answer
135
views
How to avoid crashing with ConformImages?
ConformImages[] is causing a kernel crash when applied to a list of 5k images. Is there any way to apply ConformImages on the list in batches or asynchronously to ...
- 31.8k
3
votes
0
answers
592
views
Pattern recognition
I am trying to have Mathematica come up with a simplified version of a real pattern. For the moment I'm trying with handwritten digits, but eventually I want to apply it to more complex photographs.
...
- 2,470
7
votes
1
answer
702
views
How to ImageIdentify multiple objects in a single image?
Suppose an image has multiple objects:
ImageIdentify only finds the banana:
...
- 1,641