Questions tagged [image-processing]

Questions on the image processing capabilities implemented in Mathematica.

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High Quality animation with Export?

This is my second question here. Recently I've been trying to compile a video simulation of wave propagation via ComplexPlot[] with ...
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2 answers
102 views

Import causes image to lose resolution

I am having trouble preserving image resolutions in Mathematica 13.0.1. The following is a free high-resolution GIF from Giphy dot com, pasted below for your convenience: I notice that even if I ...
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1 vote
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45 views

Recognize text in image

I have the following image and I want to extract the text on the axes. I used the following code: ...
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2 votes
1 answer
120 views

Estimating values from a timeseries picture

I have the following picture (one of several hundred): I want to basically read out every y-value for every year on the x-axis from this graphic and create a data table from it. For example, I want ...
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3 votes
0 answers
62 views

Applying Super-Resolution to differently sized images

I would like to make some images larger and noticed that there is a page in the documentation for doing super-resolution using a network structure. It's called "A Model for Super-Resolution."...
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2 votes
1 answer
87 views

Highlight area on 3D image, volume

I am trying to highlight a specific area in a 3D image, all the solution I found was for 2D images and the functions are not compatible with 3D images if anyone has a solution, I would be appreciated ...
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25 votes
3 answers
2k views

Animating battlefield data map of war in Ukraine

UPDATE on FINAL RESULT Thanks to @SquareOne effort I generated higher-resolution videos with smoothing transitions that can be seen here: https://www.linkedin.com/feed/update/urn:li:activity:...
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4 votes
3 answers
192 views

Implementing fast linear search for perfect vertical image alignment

After experimenting with image alignment aprroaches presented here and here and some other approaches involving ImageDistance and ...
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2 votes
1 answer
67 views

Stitching overlapping screenshots of a page

Suppouse we have a series of screenshots of a webpage, taken by hand at different scrolling positions. All they have equal width and height and random scrolling positions. We can imitate it as follows:...
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1 vote
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35 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, ...
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1 vote
1 answer
187 views

Rectangular Image Segmentation?

I'd like to segment an image such that the components are rectangles. Is this possible out of the box? For example: ...
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2 votes
0 answers
138 views

How to improve the accuracy of grain statistics

Grain boundaries are usually not very distinct, like pic1 , pic2 and pic3 I have made a edge mask in photoshop like the following: Then I can detect the number of ...
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8 votes
1 answer
210 views

How can I create accurate image masks from Graphics?

I am looking to generate image masks using Graphics. For this, the requirements are that: The rasterized mask must have the exact same dimensions as the image with ...
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3 votes
0 answers
58 views

Video processing: Efficient way to apply function to pixel time stack (FIJI's Intensity Z-projection)

Starting from a Video, I would like to apply a function f to the stacks of intensity values, over time, for each pixel. In FIJI ...
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2 votes
0 answers
46 views

Crop or mask geographics

I am trying to crop a map drawn with GeoGraphics. The map consists of Line and Polygon ...
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7 votes
0 answers
310 views

Background removal with hair

I'd like RemoveBackgound to work on images where the foreground boundary is nontrivial e.g. with hair: ...
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1 vote
1 answer
90 views

Fitting an Equation to an Image

I'm very new to data analysis and I'm trying to figure out how I can fit an equation to an image I generated from a large set of data I collected. I'd then want to overlap this plot to the image to ...
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3 votes
2 answers
200 views

Skeletonizing an image

I'm trying to skeletonize an image (ref) img = Import["https://i.stack.imgur.com/q2xUi.png"] graph= MorphologicalGraph[img] Input image: Skeleton ...
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  • 307
2 votes
1 answer
121 views

Generating a network from an image

This is a follow up to my previous question here I have to skeletonize an image (ref) and convert the skeleton into a network. I've tried the following ...
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  • 307
1 vote
0 answers
76 views

Skeletonize an image

I'm trying to skeletonize an image (ref) bin = Import["binary.png"] skeleton = Pruning[Pruning@Thinning[bin], 15] Input binary image: Skeleton generated:...
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  • 307
2 votes
1 answer
104 views

How do i plot a graph for width vs height of the slits from an image

I need to calculate the width of the slits along the length of each slits. I am new to image processing in mathematica and I need to plot a graph showing how the width changes along the length. I have ...
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  • 21
0 votes
1 answer
67 views

Image of house being repaired via optimization (FindMinimum) example in documentation?

In Mathematica's documentation, I recall seeing an example where a noisy image of a house was repaired using an optimization method (possibly FindMinimum) with a very large number of parameters (one ...
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2 votes
3 answers
143 views

Recover data from an image of scatter plot

I have this scatter plot and regression line for which I wish I had the original data. I know I can use the coordinates tool in Mathematica to get individual points but that is very tedious and time-...
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0 votes
1 answer
76 views

How to get the Histogram based on the intensity cross section of each spot?

I am supposed to plot the histogram based on the intensity cross-section of each circular area, I have done counting manually each area based on the pixel intensity cross-section of each green and red ...
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8 votes
2 answers
213 views

Is it possible to extract vertices and lines from this image of nonplanar graph?

The recent post was particularly interesting (see Is it possible to extract vertices and lines from this image?), but I found was that method of the comments seemed unreliable when the graph was ...
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14 votes
2 answers
641 views

Is it possible to extract vertices and lines from this image?

I have the following image Is it possible to extract the lines from this image and then convert those lines to a graph representation? I tried using ImagesLines[] ...
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1 vote
0 answers
62 views

How to find the spatial coordinate in a Geotiff that is not recognized by Mathematica as Geotiff [closed]

I am trying to read a geotiff file that is not recognized by Mathematica as a geotiff file. ...
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-3 votes
2 answers
84 views

Color-slicing transformations that detect green wood sorrel leaves within an RGB cube [closed]

Color-slicing transformations that detect green wood sorrel leaves within an RGB cube.
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3 votes
1 answer
83 views

Code to rebuild a patchwork image

I'm trying to rebuild an image which has been cut into strips vertically and horizontally then the ordering of the strips has been rearranged. For example: So far I've only been able to come up with ...
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4 votes
2 answers
118 views

How can I import an image, retrieve vertex point values from the shape, and turn that into a list?

I'm using a github repo about turning point data into an array to then create a mirror. The author used a point picker in mathematica, but I want to automate the process. How can I import my image and ...
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1 vote
2 answers
118 views

Drawing Axes on top of a Grid of plots

I have a grid of density plots, for example like this toy example ...
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0 answers
82 views

Semantic Image Segment of grayscale Text Image

How to extract text and pictures from an image file Consider this grayscale image, how to segment the handwriting part without using Color Information。 Q0:BoundingBox of different patterns: text, &...
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2 votes
2 answers
203 views

Why does GaussianFilter not have a periodic option?

Let us say I have a table: tab = RandomReal[{-1, 1}, {128, 128}]; I can filter it using GaussianFilter as follows ...
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1 vote
0 answers
68 views

How to separate overlapping portraits in an image?

Assume that I have an image with overlapping portraits. Here is an example of mandala-portraits arranged in a random star-graph: I want to separate the overlapping portraits and, say, estimate their ...
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0 answers
35 views

`ImageMultiply`, `ImageSubtract` and `ImageAdd` in "LAB" space

...
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1 vote
0 answers
125 views

Separate colours of an image

Since LAB colour space is based on opponent color theory, an image in 'LABColor' is made up of red/green, yellow blue separations. I am trying to separate an image into its distinct colour components (...
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2 votes
1 answer
113 views

How to separate these circle based on their pixels mean intensity?

I have this image I want to separate green circles from yellow circle in two different images whiteout changing the pixel intensity information. I used the mean intensity ...
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3 votes
1 answer
100 views

Image Collage with equal-sized labels

I've been trying to make an image collage, where each image in the collage has a text label in the lower-right corner (or wherever really), where the text is all the same size. Can't seem to make it ...
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8 votes
2 answers
240 views

MorphologicalEulerNumber misbehaving in 3D?

Context I would like to compute the MorphologicalEulerNumber of 3D GaussianRandomField as a function of height above a given threshold. Attempt I proceed as follows:...
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4 votes
2 answers
132 views

How to get ComponentMeasurements[] from colorized image?

I'm using a software to segment images. Long story short, the output given is an array of integers (range 0-255), which I show here colorized: I'm supposing that the software avoids representing two ...
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  • 1,303
6 votes
1 answer
183 views

Getting the area of the gaps in this image of a spider web?

I'm trying to find a way to calculate the area of the gaps in a sample of spider web in a ring. The web strands are very thin and difficult to segment, since there appear to be breaks in the line ...
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1 vote
1 answer
90 views

Adjusting highlights, midtones and shadows in an image

I can adjust the highlights in an image with ...
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  • 7,759
0 votes
1 answer
73 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 ...
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  • 912
0 votes
1 answer
56 views

Extracting an array from an image [closed]

Consider the following array: array = Partition[Mod[Range[96^2], 250], 96]; We can make an image out of this. ...
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  • 101
1 vote
1 answer
56 views

ImageAdd with specific position

Consider the following code : ...
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  • 912
5 votes
1 answer
206 views

Noisy and vague shape recognition

Consider the following image: Imagine I have several images (let's say 40), that look like this one but with slightly different cloud shapes, pixel count intensities and distances between the clouds. ...
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  • 912
1 vote
0 answers
34 views

Image processing channels in LAB space

I am trying to adjust the curves in LAB space as per screenshot of photoshop command below: I am using this method: ...
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13 votes
1 answer
398 views

Wolfram Neural Net Repository Questions

I am a research scientist in the machine learning team, and mostly involved with the neural net repository. One of the discussions with my group raised these question in my mind, and these might be ...
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11 votes
3 answers
367 views

Color regions defined by many lines

Consider the following code: ...
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  • 912
-1 votes
2 answers
126 views

Sampling a jpg image at a grid of points

I have a 1920x1440 jpg image. It has been binarized. I want to sample the values at an nxm grid of points say 50 points x 40 points. What is the most computationally efficient way to do this? Thanks.
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