Questions tagged [image-processing]
Questions on the image processing capabilities implemented in Mathematica.
1,402
questions
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50 views
Is it possible to extract data from the following density plot? [closed]
Consider the screenshot of some density plot:
Its pdf version may be found here. The plot is from this paper (Fig. 4).
Could you please tell me whether Mathematica can extract the data from this plot ...
1
vote
0answers
34 views
Change in ComponentMeasurements, HighlightImage, or Epilog for Version 12?
A convenient way to check the results of ComonentMeasurements is to show the results using Epilog. However, one of these ...
7
votes
2answers
323 views
How to recreate this image warping effect?
I'm looking to create image warping effect that looks like this animation, which resembles a misshapen magnifying glass being moved over a background:
Not sure where to start, but here are some ...
1
vote
1answer
88 views
Making features of an image more prominent
For the image below, would like to make the heavy black downward sloping lines more prominent and the fine gridlines in the background less prominent.
Also, would like to provide operations for the ...
3
votes
2answers
218 views
How to create this image with the current colors and as a mesh?
I need to create this image bigger with that coloring, and also as a mesh or wire structure,
please help me.
I tried to connect the dots, but it didn't work and I deleted it
There is some command ...
7
votes
2answers
332 views
How can I extract the edge points from an image?
I want to extract the edge points from a text image and use ListPlot[points] to visualize those points:
I tried to used ...
5
votes
1answer
111 views
How to display an image pixel by pixel randomly
I want to display an image that each pixel appears randomly, the final result is an image without noise. I have tried this, but the result is not what I expected, How should I fix it?
...
0
votes
2answers
51 views
Composition of images with different dimensions
I created a code to make an image composition ...
...
2
votes
1answer
58 views
How to remove the parallelepiped that encloses the writing or make it invisible?
I have this code that I found somewhere and I love what it does, I've been checking the "line" command to remove the line or make it invisible but I can't get it, and the other part of the ...
2
votes
1answer
76 views
Create concentric circles with numbers inside
Hello there if you can give me a hand
I want to create and export to pdf the following figure, which if you realize forms the multiplication table. The idea is to be able to control the central number ...
1
vote
0answers
71 views
Morphing between images
With Mathematica it is possible to continuously morph between images of different faces. But I was wondering if it is also possible to morph between images of any kind?
An example that uses Artbreeder ...
3
votes
2answers
59 views
How to efficiently upsample a greyscale image to generate a representative binary image
I want to create binary images by upsampling a series of greyscale images (192 x 144 resolution) by a factor of 10 with the new pixel values being a pseudorandom distribution of 0's & 1's based on ...
2
votes
1answer
106 views
How to import and cut n images in 6 parts hopefully proportional to the written and export them to a directory?
I tried to get it well formatted but I won it
I hope the question is understood
I'm using the google form which allows you to do multiple choice tests, if they were language no problem, the problem ...
5
votes
2answers
215 views
Adding contour to images
I intend to optimize my work by adding an outline to my images automatically.
I'm leaving this image as a reference for testing:
I can make an outline of the image, but with poor quality ...
...
2
votes
1answer
71 views
Find the dots on an image
has anybody a idea on how to detect dots centers on this kind of image.
Here dots host a black and white contraste (or white and black) and are almost touching each other. This make it difficult to ...
2
votes
1answer
102 views
Replace eyes in pictures
I have two images:
img1
and image 2
I want to replace the eyes of image 1 with those of image 2. I want to do this in an automatic fashion because I want to try this with several images of this face ...
0
votes
0answers
40 views
Problem with batch processing of images
I am having some problems with a palette I have designed to apply identical image processing to microscopy images. I would like to apply identical processing across a folder of images (representing ...
2
votes
0answers
52 views
FacialFeatures not working with high quality picture
I have the following picture (1280x720, png) on which I want to detect the Facial Features:
FacialFeatures[pic,"Landmarks"]
But it is returning an empty ...
3
votes
2answers
85 views
How can I find all the rectangles in an image when they overlap?
When I apply MorphologicalComponents to images like the one below (which consist of white rectangles laid on a black background), I get a single object returned, as ...
2
votes
1answer
74 views
Segmenting a binary image into three parts
I am trying to segment a binary image into three parts, head, body, and tail. The binary image is a stack of tiff files of a moving fruit fly larvae. I was able to do this initially by removing points ...
4
votes
0answers
65 views
Mathematica 12.1 Crashes when making large partitions of an image
I need to partition an image of dimension 1000 x 1000 for 200 x 200 parts. In order to do so I am using ImagePartition function but when I try to display the output ...
3
votes
1answer
93 views
Is there a more practical way to remove backgrounds from a list of files in a folder on my computer?
Is there a more practical way to remove backgrounds from a list of files in a folder on my computer?
Example:
Imagine a folder with three image files... Unfortunately I waste time manually renaming ...
4
votes
1answer
90 views
How to combine image in specific positions
Daily I make an image composition with background (background) in alpha channel in the following dimensions: 558px (length) and 465px (height)
...
2
votes
0answers
28 views
Faster alternative to ImageCorrespondingPoints?
I'm trying to use ImageCorrespondingPoints to register frames in a video sequence. Computational speed is an important consideration for the application I am ...
2
votes
1answer
59 views
Reciprocal Coordinates in discrete 2D Fourier
Is there a way to obtain the transformation of coordinates along with the Fourier transformation of a discrete data set?
Say I have some pixelwise information
...
1
vote
1answer
45 views
2-D Fourier series components from image
Suppose I draw a black/white image where the color black represents 1.0 and the color white represents 0. Is there a way to extract numerical estimates for the coefficients of a (real) 2-D Fourier ...
0
votes
0answers
72 views
How can I extract the center circular part from a series of images?
I am struggling to find an image processing algorithm for some images, two of which are shown below. I have 50 such images. I want one algorithm that will process all of them and produce binarized ...
4
votes
1answer
78 views
How to separate elements from an image
I have this file that will always have a white background and I would like to separate the elements into separate files, but I don't know which function to use.
This is the file:
...
2
votes
1answer
88 views
count stars from an image , is this possible with mathematica?
I was wondering if "MATHEMATICA" with the amount of instructions it has has any to count points in an image, in this case stars, I imagine comparing contiguous pixels and if they are not ...
2
votes
1answer
32 views
Consistent pixel assignments in ClusteringComponents?
I have a large dataset of SEM micrographs I am trying to binarily segment via ClusteringComponents, and it has seemed to be the most accurate method compared to the other binarization functions, e.g. ...
-1
votes
1answer
86 views
Extract data from picture of experimental instrument
I need to transform many pictures of an analog clock with only on pointer ( the one of hours ) in the corresponding numerical data.
Is it possibile to do it with mathematica? I would like to find ...
8
votes
1answer
277 views
Looking for AR (augmented reality) projects in Mathematica
I’m looking for any links or notebooks involving augmented reality. Any tools out there for Mathematica like ARKit?
0
votes
0answers
73 views
Hidden Metadata in DJI drone .JPG
I have imported a JPG file with MetaInformation (Exif/XMP) however all the available tags are not imported. The JPG is a DJI drone image with meta information as: altitude, YAW, GeoPosition, etc.
Some ...
1
vote
1answer
51 views
How can I generate a convex hull of a binary image?
I have a binary image (img) as shown below and I wish to generate a convex hull of the white region.
I tried to use ...
1
vote
1answer
135 views
Extracting a Mathematica approximation of a curve from an image
Suppose I have an image like the following:
and suppose Mathematica knows the correct scale of the image. Is there a way I could get Mathematica to approximate this with, say, a Bezier curve? ...
2
votes
1answer
120 views
Computing density of particles and distances from microscopic images
I am analysing microscopic particles images of the kind shown below, and primarily I am interested in learning whether in Mathematica one can extract structural properties of the particles using the ...
1
vote
1answer
43 views
Removing white space from GraphicsRow and configure FrameLabel
I have this code for three graphs shown side by side. They have the same x,y ranges:
...
5
votes
1answer
97 views
Mathematica 12 HighlightImage doubles image dimensions ! Bug?
My scripts that use HighlightImage stopped working after upgrading to 12.
I discovered that HighlightImage doubles the Dimensions of the image, see below. Bug ?? workaround ? I need the exact same ...
3
votes
1answer
127 views
Fast approach to do Summation in Compile[]?
My code does massive Summation and Matrix multiplication
Compile[] has boosted it distinctly. But I read some literatures related to my program, It seems there are ...
1
vote
0answers
52 views
Extracting Blank Frames from Imported Video
Go easy on me; it's my first question. But please do let me know if I'm doing something wrong.
When using VideoExtractFrames, I'm getting blank and black frames from my video. I get the same problem ...
1
vote
1answer
57 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 ...
0
votes
0answers
57 views
Image merge and white balance
I have three images of red, green, and blue channels of white particles. I wonder if anyone can help me to merge them and balance the white so that the particles in the merged image looks white.
...
3
votes
1answer
79 views
How to generate blobs of a given circularity?
I'm trying to generate some "imaginary" geographic regions (think of it as islands, for instance), by generating random blobs/blots. Currently, I'm using Szabloc's blotc[] function. However, ...
5
votes
2answers
260 views
Basic questions on matrix multiplication [duplicate]
I'd like to implemente a matrix multiplication among three matrices sized at 1*256, 256*256 and ...
5
votes
1answer
95 views
Merge vertexes that are close together in MorphologicalGraph
Suppose I have a image
and I take its MorphologicalGraph by using the following code:
...
5
votes
2answers
167 views
Extract individual white parts of binarized image
Suppose we have an image, like so:
and I managed to create its MorphologicalGraph by using
...
0
votes
1answer
75 views
How to remove indentation from an image border
I have the following image (fig 1) with the extracted points from the geomagic software (Please see the point list in the attached link).
https://pastebin.com/K51N8Kfa
I would like to know how I can ...
2
votes
2answers
56 views
Combine image with URL into one image
I have images from the internet and the corresponding URLs.
I want to combine the image and the URL into one image.
I don't want the URL to be placed over part of the image, but want the URL under the ...
1
vote
0answers
27 views
Acquiring images from Zwo ASI camera in Mathematica Home Edition v 11.2.0.0
I plan to use a ZWO ASI planetary camera (USB connection) for astronomical photography and would like to control the image acquisition using Mathematica. The issue is that although I have installed ...
2
votes
2answers
50 views
Counting distinct values over sliding windows in images & lists
I am trying to count the number of distinct colours in a $5\times5$ box, (a radius 2 filter) at all points over a quantized image. I cannot seem to get anything out of the following code except for a ...
