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# Questions tagged [image]

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

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3k views

### Composition à la Mondrian

I would like to paint something like this or,even better, like this I have tried ...
2k views

### Voronoi diagrams for generators other than points

Any suggestions on how to determine a Voronoi diagram for sites other than points, as e.g. in the picture below? The input is a raster image.
5k views

### Efficiently generating n-D Gaussian random fields

I am interested in an efficient code to generate an $n$-D Gaussian random field (sometimes called processes in other fields of research), which has applications in cosmology. Attempt I wrote the ...
9k views

### Embed Code Into Image

I often export images(plots, matrix, arrays, etc..) from mathematica which I end up putting in word documents or uploading to the web. The problem is that I often lose the original code and I am left ...
3k views

### Create the source image for this cool animated illusion

Have a look at this very awesome video: https://www.youtube.com/watch?v=lvvcRdwNhGM You have a vertically discretized image, which is composed of 5 or 6 images, which are shifted by an increment, as ...
2k views

### Drawing picture with straight lines (Petros Vrellis's Art)

I am trying to extend Writing a word with straight lines for any picture/image. I guess the basic idea is to find a set of points in the image region and then draw random lines through them. Let's ...
1k views

### How to generate a picture like this?

How to generate a picture like the following (from Paolo Čerić's blog)? I'd like the surface of the manifold to randomly distort.
11k views

### How can I detect an ellipse in a photo?

I tried to detect the rim of the following cup as an ellipse. I've tried the solutions given in How to find circular objects in an image? to detect the ellipse, but the detection result was not quite ...
3k views

### How to place an image inside a notebook, with the minimum memory footprint?

When creating a notebook with images, like photos, the file tends to quickly get big, which makes it difficult to use the notebook format for training material containing a lot of images. Are there ...
5k views

### How to generate image like QR code with Mathematica

How to generate such form of QR code which displays an image itself but is still scan-able?
2k views

### How can I create a glass distortion effect in an image?

I'd like to overlay a glass jar onto an image with realistic light bending. Can anyone think of a way to automate this effect? Perhaps this can be done with the raytracing package Rayica / Optica?
5k views

### Is there a way to convert an image into a Graph?

I'm trying to convert an image with several overlapping dots into a Graph. The goal is to be able to derive the Kirchhoff matrix for the randomly created "network ...
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
3k views

### How to automatically remove text from images?

I'd like to remove the text in the center of images automatically. To use Inpaint[], you need a mask, but I don't have one. So really the problem is: How to build ...
614 views

### Frown for a sex change, or, how do I unbork the “FacialGender” classifier in 11.2?

The limits of machine learning. I thought the new "FacialGender" option for Classifier would be an amusing thing to explore. ...
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 ...
3k views

### How can I detect if an image is of poor quality?

I need to filter out blurry or otherwise bad quality images from a set. I would like an efficient method to detect images that have any of the following three attributes: Out of focus or motion blur ...
774 views

### Reconstruct a graph from an image (curved edges and edge crossings)

Actually, I posted a very similar question before this.How to generate a Graph from a picture of a graph Dr. belisarius's answer have answered that question, but I find a limitation in that method: ...
4k views

### Failure to export graphics by right-click when Notebook magnification is changed

Bug introduced in 9.0.1 or earlier and persisting through 11.0.1 or later When I try to export graphics as PNG, JPG and other rasterized formats using the right-click and choosing ...
1k views

### Why does ImageData need four times more memory?

Background We are dealing with very large TIFF image files that are imported, processed and exported using Mathematica 9.0.1. Many of our algorithms only work with an array representation of the ...
1k views

### How to make a pie chart using custom image

Can we make a pie chart using a custom picture? For example, consider this image of one cent coin: I would like to use this image and cut pieces out, depending on data, and also make a clickable pie ...
11k views

### How can I detect a rectangular region of interest in a picture?

Here is a downsampled input image I converted to greyscale. To select the rectangular region of interest we first preform preprocessing: ...
3k views

### How to extract metadata from an image of a business card?

I'm trying to digitize some documents, and I came across a very cool app called camscanner app which performs parallax transform and ocr very nicely, now I'm implementing it in mathematica... Given a ...
291 views

### How to count proportion of two phase in a electron microscope picture

I have a picture: The sunk area is a phase,and the bulged area in another phase.I want count the proportion of this two area.this is my method.First I get the mask ...
779 views

### When exporting an (animated) GIF, is it possible to specify the size of the color palette?

I've exported an animation to animated GIF, which generated a 15mb file. I've been asked if I could regenerate the file, limiting it to only 16 colors, but I can't find any documentation on how I ...
354 views

### Color degrades when using Copy As Bitmap

I have discovered a problem that affects my use of Mathematica. When I use the menu command Edit > Copy As > Bitmap the colors in the copy are subtly degraded. To make this more apparent I copied ...
2k views

### Slow import of multigigabyte TIF image stacks

Update 6: After contacting Wolfram Technical Support, I was advised that the frame-to-frame import timing variability can be eliminated by reading in the frame stack from frame to frame with the ...
935 views

### How to identify chemical substance from tattoo?

A friend of mine made a tattoo on his chest of some chemical substance formula. He challenged us to identify which substance is that. I thought that perhaps a combination of: Mathematica image ...
263 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: ...
378 views

### Grid cuts my images

Bug introduced in V9.0 or earlier and persisting through V11.2 pic2 = ImageResize[ ImageCrop@Rasterize@Graphics@Disk[], {Automatic, 40}] ...
960 views

### Apply an image as a texture to text

I have the following equation eq = Sum[x^2, {x, 0, 10}] and an image ...
1k views

### Generating uniform random points over a binary image

So I recently read this excellent post about generating random points over arbitrary regions. I hope Wolfram eventually builds that functionality into Mathematica's ...
7k views

### Composing an image with a plot

I'm trying to illustrate the solutions to a textbook problem dealing with quadratic functions. This will involve plotting a quadratic and overlaying the plot and the image. Here is the textbook scan....
461 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 ...
2k views

### Image correlation

I have two images from motor scan, Image1 is shifted by MxN pixels from Image2. How can I find the shift between Image1 and Image2 ? Image -1 Image -2 If we compare the shift between the images in ...
1k views

### Ellipse counting from image

I have hundreds of images similar to this image: I'm looking to count the number of ellipses as well as their major and minor diameters. The ellipses are touching, hence, ...
505 views

### Quickly importing several thousands of jpg files?

I have several thousands of small .jpg files (30kb each) which I need to import into Mathematica. (I plan to use ImageDistance ...
683 views

### Processing images from NASA's Juno Jupiter Orbiter

Question Can you help me improve what I’ve done to create an enhanced-color picture from an image provided by NASA’s JunoCam? [My work is shown in the penultimate image of Jupiter in this post.] I’...
362 views

### SaveDefinitions->True changes the displayed image

Bug introduced in 9.0.1 or earlier and fixed in 10.4.0 I have a Manipulate[ ] that displays an image with a superimposed Locator...
227 views

### Is Mathematica 10 color managed?

With ColorProfileData Mathematica 10 can handle device-dependent color spaces. However images with embedded color profiles, e.g. ...
2k views

### Fit image of mountain to gaussian

I want to detect the edges of an image of a mountain and then fit that to a gaussian. I am unsure about how to only get the mountain edge, rather than every single edge in the image. How do I ...
1k views

### Reproduce image effect in Mathematica

How do I create the "dotifying" effect below in Mathematica? I have tried to use Rasterize first to get the image pixelated, but how do I get the disc/circle ...
4k views

### Line Intensity Profile From Image

I can get line profiles from images using imagej but it would be nice to be able to do this in my mathematica notebooks. I found this http://library.wolfram.com/examples/intensityprofiles/ after ...
5k views

### Nontrivial background removal

I have an image of a product on a poorly made green screen and need to segment out just the product: The problem is that it contains a mirror, so simple color-based methods are not enough. I tried ...
469 views

### How to load thumbnail, not image?

Is there any way to import only the thumbnail of an image instead of the full image? I frequently work with lots of images and it would be nice if the contents of a directory could be quickly ...
589 views

### How to generate a Graph from a picture of a graph?

I have a picture like this I can get this graph's vertexes ...
381 views

### High memory use while exporting a BMP

Something mysterious is going on when exporting images. I'm using Mathematica 9.0.1 on Windows 7 (64 bit), and find that the memory use is excessive when exporting to a bmp. But it doesn't happen ...
800 views

### Sharp background image in plot

How do I get rid of blurry transitions between pixels of the background image below. It's the fault of Texture[], previously discussed in this answer. I haven't ...