# Tagged Questions

Questions on the image processing capabilities implemented in Mathematica.

0answers
75 views

### How to extract the edges in this image? [duplicate]

The question derive from this place.And as for its first current answer,I have some place not really satisfied like And the EdgeDetect have its limitation to ...
4answers
2k views

### How to make a Cahnâ€“Hilliard model GIF

The question derived from @Jason B 's answer.I wanna make it but don't how to do.But we can get some rule about the GIF The change of the total pixel is very small. ...
1answer
150 views

### Generating x,y coordinates for an edge detection of image [closed]

i have a photo and I want to obtain the coordinates in a table form of its edge so that I could input the data into Autodesk Inventor May I know how I can do it
1answer
100 views

### How to reconstruct a given schematic picture from color image

There is a nice website on popular Economics with stylish picture. ...
4answers
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 ...
0answers
45 views

### Image processing for tic tac toe [duplicate]

Last weekend I was at a hackathon at Georgetown University where my team and I wrote a python program that allowed our home made delta robot to autonomously play tic tac toe with a human user. The ...
2answers
336 views

### Boundary identification

I want to get boundaries of grains from a microphotograph. I have tried using different methods but because of the texture of background I am not able to get smooth boundaries. Codes that I've ...
1answer
74 views

### Is there a bug of InverseDistanceTransform?

This is a example of documentation about InverseDistanceTransform. But this is my picture But it doesn't work: ...
2answers
261 views

### Follow each pixel brightness in set of images (Memory constrained)

I have a set of 2700 consecutive png images (8bit, 2048*2048 pixels). I would like to visualize the intensity variation of each pixel vs. image number. Here is an example of 10 images: http://goo.gl/...
2answers
405 views

### Improving visibility of text in scanned image

I have as example the image below and would like to improve it in such a way that mainly the text is visible and the noisy background is removed. How can that be done best?
0answers
66 views

### NelderMeadMinimize for 2D Gaussian fitting

I would like to fit a large number (10^5-10^6) of small images to 2D gaussians by taking advantage of the NelderMeadMinimize package from Oleksandr: Shaving the last 50 ms off NMinimize. The ...
1answer
75 views

### extract data from a graph image

How do I convert the following image graph into data (if possible into function)? I checked this answer and found that my problem is grid and plot have same color.
3answers
1k views

### Detecting X or O in a small image

I am making a robot that plays Tic Tac Toe Currently, I have code that will parse the board and separate it into an array of 9 images, each space on the board. How can I detect if the image ...
2answers
136 views

### Slice a mathematica image into sub images along black straight lines?

I have a tic tac toe board I want to dynamically process in mathematica to have my robot play a user in tic tac toe. In order to determine the users move, I want to slice the board into 9 images, ...
2answers
212 views

### Counting number of tubes in an image

The task is to recognize the tubes on the ceiling in the following image Get the binary image ...
1answer
91 views

### Grayscale Morphology

How can I achieve grayscale morphological operations on 2D images in Mathematica. With morphology I mean operations like Dilation and Erosion. With grayscale I mean the operations that take images and ...
0answers
52 views

### Convex and concave regions of a closed curve [duplicate]

A few days ago, in Mathematica's help, I saw a function for recognizing if a closed curve has a positive or negative radius (convex or concave) like in the picture I found on the web, but without the ...
0answers
84 views

### Convert (rescale) 16 Bit png image

I have a camera (12 Bit Sensor, 2048 * 2048 Pixels). The images can also be exported in 16 Bit png format. Here different settings can be used. One setting is somewhat strange. For this special case ...
1answer
96 views

### Get an array of coordinates of the edges of an image

Rick Sanchez from Rick and Morty How can I get an array of coordinates of the edge of Rick in order from left to right? I want to make my delta robot draw images. Additionally, I know that it is ...
1answer
113 views

### How to get a full closed contour image [closed]

In this program, I need to select the point on the contour image that has the same abscissa as the center of the contour and has the highest ordinate. However, since the contour is not full closed, ...
1answer
66 views

### ImageForwardTransformation produces strange artifacts

I am trying to manipulate an image in equirectangular projection with ImageForwardTransformation. I want to change the projection's inclination to the ecliptic. For ...
1answer
152 views

### Finding mean brightness, standard deviation, count of pixels in gray scale images

I have many sequential gray scale images (2048*2048 pixels, 8bit). To determine the brightness, standard deviation, and count of pixels with in two bins, zero and non-zero brightness, I use the code ...
2answers
494 views

### Fitting a curve to an image object: not a superellipse, not an egg curve.. what else?

I'm facing the problem of quantifying the morphology of objects with such a shape (nannoconids... they are fossils). One of the final goals is to produce a solid of revolution and compute volume/...
1answer
89 views

### Splitting a rasterized image into its squares

I have rasterized an image using the following code: i = Import["ExampleData/lena.tif"] Rasterize[ColorConvert[i, "Grayscale"], RasterSize -> 45] This ...
1answer
114 views

### ImageHistogram with logarithmic y scale

ImageHistogram is much faster than Histogram with ImageData. The only problem: I cannot ...
1answer
246 views

### Histograms of gray scale images

I have a large set of subsequent 8bit gray scale png images (50 Hz). They show the noise of a CMOS camera, with the lens covered. A subset of 50 images is available here: https://goo.gl/Sa3P9P I ...
2answers
93 views

### Getting image data values with coordinates in circular region

I have a number of gray level images (600, with size: 2400x2400 pixel, small instance see above). In this image there is a circular region of interest. The aim is to fit a function to the gray value ...
1answer
36 views

### What's wrong when I use ImageApplyIndexed?

I am reading a ebook called Basic image processing in Mathematica which can download free in the iBooks. In the page 114,it introduce a function ImageApplyIndexed...
0answers
80 views

### Morphing one closed curve into another [closed]

How would I go about creating an animation of one smooth nonintersecting closed curve being continuously morphed into another closed curve? Additionally, the curves are not given analytically, but are ...
0answers
41 views

### How to make black text on white background [duplicate]

I have a Georgian black text on "dirty yellow" paper I want to make pdf, black text on white paper . I try I also try to like this... Can anyone help me? Sorry for my English. Thanks!
2answers
377 views

### Recognizing integers in an image

This is the picture I want Mathematica to read I want Mathematica to recognize these numbers and put them in a list. I know that there is a function TextRecognize, ...
1answer
105 views

### How to avoid crashing with ConformImages?

ConformImages[] is causing a kernel crash when applied to a list of 5k images. Is there any way to apply ConformImages on the list in batches or asynchronously to ...
1answer
103 views

### mask specific range of RGB color frome an image with lower and upper threshold

I'm trying to detect a specific range of RGB color from an image with the lower threshold [180.150.0] and upper threshold [255,255,150]. I am just new on Mathematica please help me with clear details....
2answers
384 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: ...
1answer
266 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 ...
1answer
326 views

### Integration of incomplete rings (ellipses) pattern

I am facing a problem in trying to do a series of averages in incomplete images. I have a series of X-ray data images, like this one: As you can see my image is a series of partial rings/ellipses ...
0answers
252 views

### Motion-Based Multiple Object Tracking [closed]

See also my reduced question: Tracing 2d coordinates by using Nearest function A very important issue in many scientific fields such as Physics, Biology, Medicine and Astronomy is Motion-Based ...
0answers
209 views

### Pattern recognition

I am trying to have Mathematica come up with a simplified version of a real pattern. For the moment I'm trying with handwritten digits, but eventually I want to apply it to more complex photographs. ...
0answers
43 views

### How to restore some upset of pictures [duplicate]

I get a fish like this Then we partition and mix it slice = Partition[RandomSample[ImagePartition[ fish, 32] // Flatten], 8, 8, 1] If you restore it ...
1answer
97 views

### How to adjust the parameter of TextureCoordinateScaling

I wanna draw a picture like this This is my current work,First get the texture of picture ...
1answer
203 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 ...
4answers
772 views

### How to count number of small dots in a picture

I have this picture of small particles in a polymer film. I want to count how many particles in the figure, so that I can have a rough estimation of the particle density. But the image quality is poor,...
1answer
63 views

### Issue with ImageCrop and Rasterize

This is related to 1. I use the following code: ...
0answers
186 views

### How to convert an uploaded image to a “dot-to-dot” puzzle? [closed]

I would like to upload an image to Mathematica and have the software place numbered points throughout the image so that it appears as a "dot-to-dot" image puzzle. I would also like to specify exactly ...
1answer
138 views

### Area of a image region

I've applied Mathematica to the problem of estimating the area of an estuary, but when I got the results I wasn't able to understand in which unit of area it was given. My approach is the following: ...
0answers
48 views

### Can I extract or deduce the effective input form to duplicate the results from an interactive toolbar?

The interactive toolbars that are available in 10.0+ are very nice for getting images to look the way I want; but the black box functionality is very un-Mathematica-like, and doesn't help me if I want ...
2answers
406 views

### How to extract a region shape from an 2 colour image?

I'll start by saying that I don't know anything about image processing. I have an image and I need to extract its outermost shape for use in a WordCloud. The image ...
1answer
135 views

### Finding pixel coordinates from morphological components

I used morphological components to find the connected components in a binary image, is there a way to find the pixel postions for these integers?
1answer
145 views

### Crop the object area in an mage [closed]

How to crop the object in the image by black pixel or white pixel area. I want the idea or any code for this. Bounding box is in Matlab. But here we are not have the bounding box options. ...
1answer
107 views

### How to colorize a 3D image [closed]

I have a 3D image where the values are in {1/4, 2/4, 3/4, 4/4} and its size is {134, 134, 67}. I used Image3D to display it. However, I am wondering if there is a possibility to colorize the image by ...