Questions tagged [image]
Tag for questions about bitmapped graphics, particularly those using the Image function.
588
questions
0
votes
0answers
39 views
Use Mathematica to draw a tensor-like network
What are the Mathematica ways to draw this seemly delicate figure? Such that we can output a PDF file in the end.
0
votes
0answers
26 views
complete contours (outline) from a image
I want to find the contours of (parts) image and sent the output to a lasercutter.
For example, take this image:
I use this code:
maskv1 = AlphaChannel[RemoveBackground[bal1]];
contours =
...
8
votes
1answer
109 views
How to detect rectangles with certain colors in an image?
I'd like to find the red bordered rectangles in this image:
Here are my example images:
...
8
votes
0answers
156 views
Guide to capturing the complete image of given urls?
I'm trying to use WebImage[] to capture the complete image of a website (yes, it might be very tall). I seem to be having some issues with it:
How to attempt to capture a complete image of the ...
1
vote
0answers
41 views
Mathematica for automatic image processing and quantification [closed]
I've been working on image analysis pipeline that involves a set of batch processing macros in ImageJ (for image segmentation) and data processing in Excel (VBA). I've got the process run in 4-5 ...
3
votes
1answer
79 views
Describe overlapping parts of an image with the fewest points
Lets say I have an image composed of 19x19 pixel red squares, each of which represents a single point (i.e. a plotmarker). I wish to obtain an estimate for the actual point each square represents, ...
2
votes
1answer
87 views
Convert Plot to Base64 [closed]
My goal is to get a Base64 string directly from a plot (or any Graphics object) in Mathematica such that, when using a Base64 decoder online, such as this one, I ...
5
votes
3answers
177 views
Symmetric icons
I'm trying to replicate "symmetric icons" from this book:
https://www.amazon.com/Symmetry-Chaos-Search-Pattern-Mathematics/dp/0898716721
Here is what I have so far:
...
6
votes
1answer
85 views
Using images as points in `ListPlot`
I am trying to make a ListPlot with a bunch of points, each of which I want represented with a distinct image (e.g. *.png). I'...
2
votes
1answer
96 views
How to interactively draw a bitmap with mouse?
I cannot find the MNIST dynamic activation example I strongly believe I have seen in the documentation.
What would be the most efficient way to
draw a black &...
1
vote
1answer
78 views
Track the location of of dot from noisy image
https://imgur.com/a/SnTYESG (subtraction between the image)
https://imgur.com/a/ZdOS5wf (orignal image)
From the original image, since my CCD camera is bad, I cannot really see anything.
However, ...
7
votes
1answer
172 views
How to import a ByteArray from GenerateHTTPResponse?
Without GenerateHTTPResponse the import works as expected.
ba = ExportByteArray[Plot[x, {x, 0, 1}], "PNG"];
ImportByteArray[ba]
...
3
votes
1answer
42 views
Why do ColorSeparate and ColorConvert give slightly different output?
Consider the following test code:
...
5
votes
1answer
164 views
Decode Image from Base64
From a web API, I have a bunch of realllyyy long strings that look like this:
data:image/jpeg;base64,(...)
Sites like this will decode these strings no problem, ...
4
votes
0answers
78 views
Passing an image to Kernel via NETLink
I have created a specialized image analysis method in Mathematica that takes an image and returns a marked up image with some detection output. In order to allow others to feed images into my ...
1
vote
1answer
70 views
How to put the plot together?
I have a very long code which at the end, I get two plot (main energy plot and energy bar attached pictures). I need these two plots next to each other (for paper). Problem is I can not save the ...
1
vote
1answer
88 views
How to download user faves on Flickr?
The Flickr service API doesn’t seem to have the getfavorites() request implemented. Is there an good way to do this with WebExecute?
Code to get started with:
For ...
14
votes
1answer
251 views
Tracking cells as they move under a microscope
I have a video (tiff file) of cells under a microscope and I'd like to segment and track the location and sizes of them across time:
It has a hundred frames:
I've uploaded it here (now it is public):...
7
votes
1answer
773 views
web scraping images
I am trying to load player profile pictures from the following page:
https://www.transfermarkt.com/manchester-united/startseite/verein/985/saison_id/2006#
I use the following code:
...
1
vote
1answer
41 views
How reduce resolution of a graph during export?
Suppose I have a density plot which I want to export in EPS format. But when tried using command, Export["/home/1.eps", %263, "EPS"] , the exported image has very large size (~100MB). How can I ...
2
votes
2answers
87 views
6
votes
1answer
109 views
Is there a SubImageApply?
Given an image and a subimage (as a rectangle or pixel ranges):
img = ExampleData[{"TestImage", "Lena"}];
f = FindFaces[img]; HighlightImage[img, f]
How would ...
0
votes
2answers
46 views
how i can create 2d pixels image
Is it possible to create an image with a defined number of pixels? For example, create a circle through the equation x ^ 2 + y ^ 2 <= 200 ^ 2 in a 400x400 pp image and define different colors for ...
1
vote
1answer
52 views
Why ImportByteArray when generate image from bytes
I was trying to generate an image from a list of bytes so I only had to Import an Image once as I want to store a Base64Encoded ...
6
votes
4answers
174 views
How to count the overlapped disks in a picture?
I have several picture containing many small circles. I can manually count the circles in these pictures but it will be time-consuming and make me tired. How can I use mathematica to do this job?
I ...
3
votes
0answers
48 views
Uploading an image to Wolfram with “png” or “jpg” suffix [closed]
Using CloudExport one can get images of Wolfram objects into the cloud:
Problem: Those urls don't come with a *.png or <...
2
votes
1answer
87 views
Segmenting cells from a stained image of cells from microscope
I have an image which has stained cells and I have to segment all the cells.
But the problem is that the cell boundary is not very distinguished where there is staining done because of the stain.
...
5
votes
1answer
74 views
Find image dimensions without importing the full image?
Is there a way to find the ImageDimensions of an image file without Import'ing each one? The reason being that I have a ...
0
votes
0answers
32 views
How to run image manipulation function to an array of images?
I have multiple images imported into an array. My issue begins with using this array for an image manipulation function such as Inpaint. Inpaint only accepts a single image at a time.
Here's how I ...
1
vote
1answer
42 views
Comma separated images for .gif creation
I recently created a key frame animation using Mandelbulber 2.18-1. Each .png image was placed in a folder with known location. I then dragged all the images and dropped them into a Mathematica ...
26
votes
2answers
1k views
How to project 3d image in the planes xy, xz, yz?
Some idea of how to do something similar to the image, but with any 3d object
6
votes
2answers
293 views
Image processing: Removal of two spots in fundus images
I have many hundreds fundus images of the human eye.
The yellow arrow points to two spots which I I want to remove. The
final result should be a perfect circle.
The removed area should be ...
17
votes
1answer
265 views
Repairing a panorama
I was on a cruise and the panorama I took was warped due to the ship rocking:
I'm hoping to correct this so that the horizon is level. Here's the full resolution image:
...
3
votes
1answer
73 views
Glue a series of images as textures on various points of a sphere
Using the techniques outlined in the answers to this and this questions, it's possible to map images as textures on the surface of a sphere or other object.
These questions, however, consider the ...
1
vote
0answers
26 views
WebImageSearch for images of high resolution?
Is there a way to specify a minimal image dimension when using WebImageSearch? Since it costs money I don't want to do a large search and then filter the results.
...
2
votes
1answer
58 views
Where to find information about models, data and labels used by Image/AudioIdentify?
I am thinking about using Mathematica 12's ImageIdentify and AudioIdentify functions for an interdisciplinary research project. The social science part of it requires to describe a little bit the ...
2
votes
0answers
65 views
Converting video file to list of images to analyze pixels of each frame
I am trying to recreate the following physics experiment to analyze chaotic motion:
https://www.researchgate.net/publication/275890532_Tracking_the_Motion_of_a_Double_Pendulum_Using_Mathematica
I ...
1
vote
1answer
60 views
How can I save an image after manipulating it? [closed]
I need to extract a picture from a red square for further transformation over it.
-2
votes
1answer
108 views
How is that distance between images calculated?
The command
ImageDistance[Plot[x^2, {x, 0, 1}, PlotRange -> {0, 1.01}],
Plot[x^2 + 0.01, {x, 0, 1}, PlotRange -> {0, 1.01}]]
produces ...
0
votes
0answers
117 views
Remove background image and redraw lines in black
I do not know if the title is correct.
The image that I upload has liked me a lot because of the characteristic that no matter the angle it seems that it is looking at you, you could indicate me how ...
4
votes
3answers
280 views
Converting a list of colors into an image
I want to manipulate colors, and merge the resulting vector and rasterize it into an image, controlling the resolution of the pixel.
E.g. I tried to:
But what I would like to have is an image of 3 ...
7
votes
1answer
121 views
Captcha text morphing effect
There have been many posts about generating and cracking Captchas. However, I have never seen a post or answer concerning one the more recent versions of re-captcha images - a "word morphing effect" ...
1
vote
0answers
54 views
Image to coordinate system
May I kindly ask you to teach me how to align the symmetry axis (in blue) of the attached picture along the Ox and/or Oy axis. The axis of symmetry is slightly off (rotated to the right).
In other ...
2
votes
3answers
99 views
Text position inside jpeg file
I tried the following line in order to write a text in my image.
p1bis = Labeled[p1, Text[Style["(8)", FontSize -> 52]], {{Top, Left}}]
I get the following ...
2
votes
1answer
223 views
Drawing Circle using Image[Graphics[]] - incorrect coordinates
I want to draw a circle with center {x,y} in an image.
I use the following code:
...
1
vote
1answer
44 views
Programmatic access to Export options for filetype
For specific filetypes, e.g JPG, GIF, etc. I would like to get a list of available options for use in Import and Export.
Unfortunately, the obvious thing doesn’t work:
...
0
votes
0answers
104 views
How do I get a beautiful image overlay from data and a model function?
I have a set of experimental data that I wish to make into a density plot. Then I have to overlay an image of a model function f(x, y, z) = Sin(x/z)Sin(y) on the ...
2
votes
2answers
80 views
Text beside image
I have a lot of text in my Notebook (Format>Style>Text), and I would like to have the full width text, then insert an image on the left, and have the text continue down the right side of the image, ...
8
votes
2answers
1k views
How to convert a 4-channel image to 3-channel image in an elegant way?
I have a 4-channel image (RGBA). I want to reduce its channel count from 4 to 3.
The method I am using currently is to Right click and Save as a .png file. After ...
2
votes
0answers
69 views
Help find rectangles with numbers [closed]
I have this picture
1)
Result must be like that
2)
. But I can achieve it only if have good numbers with picture like that 3)
With first image I have result:
4)
I can't recognize numbers with ...
