Questions tagged [image-processing]

Questions on the image processing capabilities implemented in Mathematica.

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Making a Scanimation

Scanimations are also known as a barrier grid animation. These work by overlaying a screen with black (or in the gif below, red) bars separated by transparent bars. The red bar width is an integer ...
Tomi's user avatar
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3 votes
1 answer
153 views

Convert black and white pictures into color images

I have a digital image of an old black and white picture. Is it possible, using Mathematica, to convert this old picture into a black and white image? For example: This transformation was done using ...
Michiel van Mens's user avatar
0 votes
1 answer
147 views

Finding Contours in Photo to Create a Topographical Map

I am setting up a special table to simulate the scenario in this problem in this problem, but instead of finding the geodesics, I want to create a topographical map using the contours. Here is a ...
Teg Louis's user avatar
  • 383
3 votes
2 answers
191 views

Keys in the vicinity

What I want to do is to recognize keys in the image and create a list of keys around every key that fall within a pentagonal (or similar) region. These are the ones that can be accidentally pressed ...
Syed's user avatar
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1 answer
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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 ...
Lewis Ryan MH's user avatar
19 votes
1 answer
2k views

Efficiently Mowing Grass with Mathematica

Recently, I was mowing my yard and was thinking about how to use the least amount of time/fuel and how to simulate. Mowing a yard that is shaped as a convex polygon is not difficult, you can just make ...
Teg Louis's user avatar
  • 383
4 votes
2 answers
196 views

Gray level shading of image histogram bins

How to shade bins in an ImageHistogram to match the image GrayLevel? Inputs Import the following graphic: ...
dantopa's user avatar
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13 votes
1 answer
298 views

Lens on a map. Realistic imitation of magnifying glass on images with text and other small features

UPDATE: Code from this post was used for video generation here: Cinematically moving a lens over images: magnifying glass effect in videos I am trying to create a magnifying glass effect for images ...
Vitaliy Kaurov's user avatar
1 vote
0 answers
95 views

Morphing curves with ImagePeriodogram

Any idea how to achieve smooth transition from one image to another (so that the curves are morphing from one shape to another)? I am aware that ImagePeriodogram ...
azerbajdzan's user avatar
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1 vote
2 answers
134 views

How to calculate the depth of the lake in mathematica?

I want to calculate mean depth of Goose lake (mean depth=4.6 m), I use bellow command for this operation, But this command is not automatic and we have to create the coordinates manually, and on the ...
Erfan's user avatar
  • 159
7 votes
2 answers
168 views

Getting Area from GeoGraphics

I want to find the area covered by the reservoir of a dam using a satellite image. This is what I have so far. ...
Navvye's user avatar
  • 51
8 votes
2 answers
350 views

Reverse the rotation of an animated gif and create a mirror image of it

I need Mathematica code to reverse the rotation direction and viewpoint of an animated GIF named "wheel." The current rotation is counterclockwise, and I need it to rotate clockwise while ...
Pamela's user avatar
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3 votes
0 answers
121 views

How to estimate Lake area and volume in Mathematica?

I have a satellite image of the lake and I want to estimate its area and volume. Actual volume:1.49*10e8 m^3 Actual Area:36.9 km^2 I did the following command to find the volume, but it is not very ...
Erfan's user avatar
  • 159
1 vote
0 answers
43 views

Finding and manually weeding out images in ClusteringComponents clusters

I have processed images using the following code, where list1 and list 2 are x and y axes, sample of images: ...
atomic-muclei's user avatar
0 votes
0 answers
58 views

How to extract shape from image in the Mathematica?

I have some satellite images for the lakes. How to extract the shape of the lake with maximum accuracy from the image?
Erfan's user avatar
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1 vote
0 answers
72 views

Finding how far an image has moved a very small x distance

I am trying to process 200+ images (10 datasets, each set contains ~20 images) and see how much each image changes or moves compared to a starting position for a dataset. The problem is, I expect a ...
atomic-muclei's user avatar
1 vote
2 answers
128 views

How to do edge detection in Mathematica?

I have some pictures of water level and I want to do edge detection, I used the following command, but this command is vertical edge detection and I want horizontal edge detection and water level. ...
Erfan's user avatar
  • 159
3 votes
1 answer
49 views

Obtaining the numerical value of barcharts from a plot in an image

I am struggling to obtain the numerical values {x,y} of the barcharts in this plot. Ideally with an automated routine. Time ago, I developed a routine to do it in ...
Luigi's user avatar
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7 votes
4 answers
831 views

Converting an Unicode's image into polygon data for an SVG

So, I have the the Chinese character 熙, which I can easily turn into an image: img=Rasterize[Text[Style[FromCharacterCode[{29081}], FontSize -> 300]]] which ...
Teg Louis's user avatar
  • 383
0 votes
0 answers
30 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?
Erfan's user avatar
  • 159
2 votes
3 answers
157 views

How to design a mountain logo

I want to create mountain logos similar to this one: I started accumalating random integer sequences looking for a solution with the Filling-option of ...
eldo's user avatar
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0 votes
1 answer
76 views

How to take a satellite image in Mathematica at different times?

I want to see the satellite image of the same area at different times. But by entering the following code, also shows the same picture with changing times. ...
Erfan's user avatar
  • 159
2 votes
0 answers
119 views

How to get satellite image directly from Mathematica?

First, I get the image of the bands of the desired area from the site https://earthexplorer.usgs.gov/, then I import the images into Mathmatica by addressing them as below: Select dataset directory: <...
Erfan's user avatar
  • 159
3 votes
1 answer
123 views

Cluster defects in microscope image

How to detect defects in the image? The code doesn't need to find all small defects, but I would like to reliably detect the 3 largest defects. My current solution, but it is missing the larger ...
Jozef Pulko's user avatar
0 votes
0 answers
102 views

Calculating the two-point correlation of pixel intensity in an image

I'm dealing with a monochromatic image represented by a matrix of pixel intensities, something like this: myImage = {{1, 4, 6}, {0, 3, 1}, {9, 1, 1}} I wish to ...
Yejus's user avatar
  • 171
1 vote
1 answer
49 views

ImageResize change image pixel value range

I have a weird image in my notebook. If I do ImageResize to it. The pixel values of this image is changed. Sorry, I can not share this image directly. As you can ...
matheorem's user avatar
  • 17k
4 votes
1 answer
137 views

How can I increase boundaries accuracy in satellite images?

I use the following codes for this work on Mathematica, but they have low accuracy. I would be grateful if you could help me improve accuracy. The codes are as follows ...
Erfan's user avatar
  • 159
3 votes
1 answer
100 views

How to identify ellipses in grainy images and measure their position, semi-axes and orientation?

I am trying to analyze images of elliptical laser beams that are striking 'ground glass' surfaces. I need to determine the size, position and orientation of the ellipse that represents the boundary of ...
Drotar's user avatar
  • 107
3 votes
1 answer
99 views

Rotate components on image around a fixed point

I have an binarized image and a center ...
matheorem's user avatar
  • 17k
2 votes
1 answer
246 views

Moving disk over a underlying image

I want to make the following animation. The basis is a image, for example Lena's photo. I will place a new layer over this image. This layer has a color, for example black. In this layer there is a ...
Michiel van Mens's user avatar
6 votes
2 answers
171 views

How to connect dots and segments on image to form continuous curve?

For example, I have images like or How to connect those segments to form a continuous lines are immediately obvious to the human eye. But how to do it automatically with Mathematica?
matheorem's user avatar
  • 17k
1 vote
0 answers
45 views

Cannot use perimetric complexity function in Mathematica

I am very new to Mathematica, so I'm having difficulties troubleshooting the code that I am trying to resolve (I'm much more familiar with R, but sadly I haven't found a package to do this). In any ...
Shawn Hemelstrand's user avatar
3 votes
1 answer
106 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 ...
Eisbär's user avatar
  • 1,434
1 vote
1 answer
128 views

How to get DFT from Sound/Audio/Image?

When I'm trying to do Discrete Fourier Transform or just get a ListPlot of values from Sound object, I get error message.. I understand that Fourier command (and ListPlot of course) works only with ...
shamil khal's user avatar
1 vote
0 answers
63 views

Calculating luminance in $\rm{cd/m^2}$

Let's say I have an image of the following transparent material through which light is passing, I want to calculate the luminance in units of $\rm{cd/m^2}$. What I did is ...
a019's user avatar
  • 811
1 vote
0 answers
99 views

How to fix Vignetting?

Such as this photo: I want to remove the dark corner to get this result: I know this is easy to remove in Photoshop, but I'm a MMA user so I want to know how to process it with MMA...
yode's user avatar
  • 26.3k
0 votes
1 answer
60 views

Tiff image height fft

I wanted to import .tiff image to Mathematica and then plot fft of z values (height) of the image i. e. values which are translated to color in the image. I know that total time to create picture was ...
Marianna Kalwat's user avatar
2 votes
0 answers
93 views

Creating a size changing image in output cell

In the following video, there are Image 1 and Image 2. The image size of Image 1 changes ...
imida k's user avatar
  • 4,047
0 votes
1 answer
66 views

Adding unit square axes to an array plot

I want to take the image created by ArrayPlot of a matrix A and add axes with the origin at the top left so that the image looks like the density plot of a function on [0,1]^2. ...
fratepencil's user avatar
0 votes
0 answers
37 views

How would I convert AircraftData[] to an Entity[] that could be used with ImageIdentify[]?

I am working on a Design of Experiments to determine the image adjustment settings for a given collection of aircraft images to maximize the probabilities of correctly identifying the aircraft types ...
Doug Kimzey's user avatar
  • 2,259
0 votes
0 answers
50 views

How could I draw a picture by connecting stars between them?

My idea is to try to make a program which would be able to trace a given picture in the sky, by simply connecting stars. Therefore, I have two questions. Is it possible to convert the product of an ...
Robin Raxel6's user avatar
0 votes
1 answer
52 views

Is it possible to ask Mathematica to crop a specified area in the given plot? or, is it possible to manually erase redundant part of a plot?

I am using this code ...
Martha97's user avatar
  • 349
3 votes
1 answer
80 views

Is it possible to ask Mathematica to crop only the red area in the given code?

I am using this code ...
Martha97's user avatar
  • 349
1 vote
1 answer
41 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
Nick's user avatar
  • 403
1 vote
2 answers
106 views

How to set the width of grid elements in cm?

As a 'painter', I use photos. To get a good projection of a photo on the canvas I use a grid. I draw this grid both on the canvas and on the photo. It is an easy way to get the proportions right that ...
Michiel van Mens's user avatar
0 votes
1 answer
53 views

What's the expression of transformation T in area-based Image operations such as ImageFilter and ImageConvolve?

in the “tutorial/ImageProcessing”, as the following picture shows I just wonder what's the expression of the T in the area-based image operations such as ...
Aerterliusi's user avatar
3 votes
1 answer
70 views

Detecting lines in a 3D dataset

Premise I have a 3D dataset of a system responding to different frequencies https://pastebin.com/9MyQ6S74 (x: imposed frequency (f1) y: response frequency z: response amplitude) I know that the system ...
alex's user avatar
  • 1,396
8 votes
1 answer
239 views

Automatic image recognition of Lissajous figures on oscilloscope

I have thousands of oscilloscope images showing Lissajous figures for example like below 4x5 image collection Define a function that can generate various Lissajous figures ...
matheorem's user avatar
  • 17k
1 vote
0 answers
49 views

Why CUDAImageMultiply so slow in such cases? How can I speed up it

When I'm doing Image composition task, I want to use CUDAImageMultiply to speedup my performance, however, After trying it, CUDA is very slow, I've tested the ...
HyperGroups's user avatar
  • 8,557
1 vote
1 answer
55 views

How to compare two ParametriPlots for different problems?

I have solved the following problem for these two situations and created their plots. Now I want to contrast the same axis system in the two plots. I used ...
Athanasios Paraskevopoulos's user avatar

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