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Questions tagged [image]

Tag for questions about bitmapped graphics, particularly those using the Image function.

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7
votes
1answer
161 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] ...
10
votes
1answer
242 views

A bug in Rasterize and Graphics: diagonal line is under-diagonal

I plot a straight diagonal line and then simply rasterize it. Consider what happens (Mathematica 8.0.4, 10.2, 11.1.1 and 12.0 on Windows 7 x64): ...
8
votes
2answers
272 views

How to recreate this 3D plot?

In other languages, one can make a FeaturePlot3D-esque graphics where the inset images look realistically three dimensional. Meaning that they are smaller when farther away (and also hazier). So how ...
0
votes
0answers
97 views

How can I analyze image colors expressed in the CIELAB L-a-b model? [closed]

I have a database of colors in L-a-b format. I want to analyze how many colors there are [in an image (??)], and I want to know the quantity of each color that it contains. For example: I want this ...
1
vote
1answer
69 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
235 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):...
4
votes
1answer
105 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
74 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
68 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
39 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 ...
7
votes
1answer
749 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: ...
2
votes
2answers
80 views

Placing Image into Center of Pie Chart

The following code ...
6
votes
1answer
101 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
43 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
46 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
152 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 ...
12
votes
0answers
190 views

Is it possible to search the web by image from Mathematica?

Is it possible to perform a web search based on an image input? There are several services that provide this: Google, Bing, TinEye, and maybe others. I am not sure which can be accessed ...
3
votes
0answers
46 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
81 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
71 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
37 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 ...
22
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
17
votes
1answer
261 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: ...
6
votes
2answers
283 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 ...
3
votes
1answer
68 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
24 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
59 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 ...
53
votes
3answers
3k views

Composition à la Mondrian

I would like to paint something like this or,even better, like this I have tried ...
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
104 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
114 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
269 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
116 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" ...
5
votes
4answers
501 views

Fill in an incomplete outline of an image

I have an outline which I have extracted from an image, which may well not entirely closed, for instance: I now want to fill the inside of this, as another image, using the convex hull if it is not ...
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
88 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
130 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
41 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
101 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
71 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
769 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 ...
1
vote
4answers
112 views

setting size of images which are result of TextRecognize

Im learning Mathematica and the Wolfram language for shot time by myself. Its a pain for me that many settings are somehow hidden. Now I spent hours to find solution for something I already did with ...
2
votes
0answers
68 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 ...
15
votes
3answers
427 views

Deleting noisy data from a plot (manually) and export the best remaining data

I have the following temperature time-series. As you can see it contains very very noisy points in some periods (Fig.A). I tried to approach the best data(the black one in the center) based on the ...
2
votes
1answer
31 views

ColorFunction in SphericalPlot3D fails with ImageValue

I would like to texture and deform a sphere with with images using various mapping functions between x,y and phi,theta. I figure I should start with $f(phi,theta)=(x,y)$ as a test case. However, I ...
23
votes
3answers
1k views

How can I make a graph network from image of granular packing?

I have an image from experimental data of granular packing. I need to characterize the packing as a network. The network consist of node (center of granular particle) and edge. Two node are connected ...
3
votes
0answers
73 views

How to do your own Wolfram Function-of-the-Day style GIF?

Anyone know how Wolfram tweets out GIFs of a notebook running some code like this one? https://twitter.com/WolframResearch/status/1083739334879182848 It's a lovely way to show how to build/iterate ...
0
votes
0answers
37 views

interface problem for image recognition

I made the following code that should recognize the image imported from the pc. If I do it for the first time it's fine, but if I load a second image it leaves me the name of the previous one. You ...