Questions tagged [image-processing]
Questions on the image processing capabilities implemented in Mathematica.
1,435
questions
4
votes
1answer
40 views
How to transform an image into a panning video?
NASA released a panorama image of Mars taken by the Perseverance Navcams 360-Degree Panorama Camera on February 22, 2021.
I would like to have that image as an animated background for my Zoom meetings,...
2
votes
1answer
87 views
2
votes
0answers
70 views
How to add hexagon mosaic to a photo?
I want to put a hexagon mosaic on the area of the picture (the effect is similar to the figure below):
...
1
vote
3answers
64 views
Obtaining Pixel Values, from an image, while being able to zoom
I've built a small manipulate widget to extract a pixel value from an image whereever the mouse is clicked:
...
0
votes
1answer
61 views
Problem with tracing a marker in an image
My problem seems simple: I try to follow a marker across a number of images. All work fine, but when I update the marker from image to image, I observe a weird oscillatory behavior. I isolated the ...
2
votes
2answers
49 views
Number of similar pixels on a loop arround some pixel
I defined a command ŠtejTakePiksleOkol, that counts the number of pixels on a square loop arround some pixel, that have similar normalized RGB.
If the square loop would go over the edge of the picture ...
0
votes
1answer
29 views
Derivatives not holding their definition when generated with a function
I'm trying to create a method to generate the function and the partial derivatives of an image.
The problem is that, when executed, the derivatives won't hold their definitions.
As I see it, dI1x, ...
1
vote
1answer
44 views
Speeding Up ImageApply / Binarize?
I have a 5Kx4K image.
I'm wanting to binarize it.
At the moment, I have a simple binarization function, but it's taking 6 seconds or 8 seconds to binarize. ...
3
votes
1answer
112 views
Distance between two points in a picture
I have this picture:
I'de like to obtain the distance between two of these points. The black scale bar is 3$\mu m$.
To do so, I import the image to Mathematica and call it pic. Then by finding ...
0
votes
0answers
13 views
CloudExport results in a blank file
I'm trying to convert a 2d image to a 3d object that can be digested by 3d slicing software, specifically the algorithm contained here http://archive.bridgesmathart.org/2013/bridges2013-311.pdf
I had ...
4
votes
1answer
140 views
Points in a given image file
I have scattered points of red, blue, and green in an image as follows:
Is there anyway to convert this image to Mathematica, and assign, for example, coordinates to points?
1
vote
0answers
26 views
ImageCorrespondingPoints[] using my own lists of unmatched points
ImageCorrespondingPoints[] finds a set of matching interest points in two images and returns their pixel coordinates. The doc says it "uses ...
1
vote
0answers
76 views
NonlinearModelFit with two-dimensional input to two-dimensional output
I want to estimate a nonlinear mapping from two-dimensional input positions to two-dimensional output positions. (Think of this as a nonlinear distortion of an image. Once I get the estimated ...
4
votes
1answer
51 views
Grid shows next to image, not on actual image, and ImageDimensions are wrong. What can I do?
I am still using Mathematica 10.3 and I have the following problem:
My code is as follows (based on what I found in a related post, see below), but I used another example image. So here is my code:
<...
5
votes
0answers
103 views
convert image of mathematical form to mathematical form (OCR)
I wish to convert images of mathematical form to mathematical form(and not the opposite).
I've found this tool which does a great job but I wondered if it's possible to enter an image directly to ...
11
votes
2answers
363 views
Distorting image to ensure consistent vanishing point
Here's Giorgio de Chirico's painting, Ariadne:
The Surrealist artist deliberately broke the rules of geometric perspective, giving the work his characteristic sense of mystery and unease.
What would ...
4
votes
1answer
122 views
Mathematica GPU occupancy is too high when the current page has high quality images
When Mathematica's current page contains a high-quality picture, the GPU occupancy rate will increase and the current page delay of Mathematica will increase( the software is slow to respond to my ...
9
votes
2answers
187 views
Replace a color in image with hatchfilling
Is it possible to identify a color (say grey in a 3 color Black, Gray and White image) and ...
6
votes
1answer
69 views
neighbouring pixels : next smaller and bigger perimeter
I have a list of pixels centers, for example :
...
4
votes
2answers
255 views
How to create a smooth black and white texture without jaggies?
The following code creates a random black and white texture with ugly jaggies (pixelized "stairs") all around the shapes, because of the Binarize command. ...
2
votes
1answer
55 views
How to make a smooth highly contrasted image from a Blur, without affecting the sides?
I'm generating a random texture using the code above, by blurring random tiles:
...
3
votes
1answer
78 views
Extracting information and adding more details to an imported image of a plot
I have the following image that has been created using another program.
Is there a way for Mathematica to load this image, "understand" the limits of the frame (horizontal axis between -1 ...
12
votes
0answers
209 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 ...
6
votes
0answers
81 views
Computing correspondences between two images
A classic problem in computer vision is computing correspondences between keypoints in two similar images, despite modest variations in size, lightness, orientation, etc., of the images, as ...
4
votes
0answers
86 views
Separating boundaries from WatershedComponents
I am trying to look for local minimum on the boundaries between watershed regions.
Typically the boundaries are not connected and spanning across the whole image so it is possible to do it through
<...
2
votes
2answers
86 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://...
3
votes
1answer
76 views
Automatic region of interests for 2D images
I have a picture displaying certain remarkable features (high intensity peaks).
Is there a function that allows me to automatically draw a (Region Of Interests) ROI around the features and crop the ...
4
votes
1answer
94 views
Region detection in a grayscale image
I would like to identify the white spots in a greyscale image and calculate the area among other things.
I have tried to identify the white spots with:
...
2
votes
1answer
39 views
Manipulate and DynamicImage
I would like to use DynamicImage within Manipulate, but have been unable to get the contents of DynamicImage to update. This basic example demonstrated the problem:
...
1
vote
0answers
122 views
average distance between features on image
I have this image:
and I would like to measure the average distance between the red dots.
It is important to know that they are distributed in 3D and we are looking through a slice 50nm thick (in ...
0
votes
1answer
80 views
Strange behavior of Show with picture + points
I have a square image of 1000 x 1000 pixels, and I want to generate a collection of points inside the image. Knowing that the image is a square, I thought of simply generating points in the domain {0,...
1
vote
1answer
63 views
Importing an RGBA image from raw binary data?
Problem: I have printed some binary data from gdb which I'd like to inspect as an image. I am able to do this with gimp if I parse the data as an RGBA raw image ...
0
votes
0answers
45 views
Factorize a matrix that is associated to an image with RGB code
I have this image data and size:
...
3
votes
1answer
102 views
Circle-based skeletonization demonstration
Skeletonization (or the medial-axis transform) is the process of finding the "middle" axis of a region (expressed as a mask). It is performed by the ...
1
vote
0answers
50 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
364 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 ...
17
votes
2answers
1k views
Smoother jelly / water effect on an image
I'm trying to achieve a jelly / water surface effect. I'd like it to be a bit smoother. Here I am taking a triangulated rectangle and perturbing all points by a little random noise for each frame. ...
1
vote
1answer
96 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
228 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
356 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
124 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
58 views
Composition of images with different dimensions
I created a code to make an image composition ...
...
2
votes
1answer
87 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 ...
2
votes
0answers
87 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
70 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
113 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
222 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
78 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
109 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
41 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 ...
