Questions tagged [image-processing]

Questions on the image processing capabilities implemented in Mathematica.

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9
votes
2answers
218 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
76 views

neighbouring pixels : next smaller and bigger perimeter

I have a list of pixels centers, for example : ...
4
votes
2answers
302 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
67 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
83 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
273 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
91 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
96 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 <...
3
votes
2answers
192 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
92 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
272 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
51 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
155 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
85 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
118 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
47 views

Factorize a matrix that is associated to an image with RGB code

I have this image data and size: ...
3
votes
1answer
116 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
53 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
393 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
105 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
243 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
392 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
146 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
134 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
117 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 ...
4
votes
2answers
113 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
125 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
239 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
114 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
130 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
52 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
57 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
127 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
106 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
78 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
97 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
138 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
34 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
65 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
65 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 ...
4
votes
1answer
119 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
122 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
37 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
105 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
316 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
1answer
135 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 ...
2
votes
1answer
138 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
180 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? ...

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