Tagged Questions

Questions on the image processing capabilities implemented in Mathematica.

37 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...
87 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 ...
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!
385 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, ...
106 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 ...
110 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....
398 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: ...
275 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 ...
328 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 ...
274 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 ...
214 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. ...
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 ...
98 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 ...
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 ...
867 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,...
67 views

Issue with ImageCrop and Rasterize

This is related to 1. I use the following code: ...
217 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 ...
141 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: ...
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 ...
417 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 ...
144 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?
149 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. ...
108 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 ...
166 views

Filter a specific area of an image

I try to obtain the angle of the periodic waves that you can see below. I am using the FourierTransformation to get it: ...
188 views

How to realize a Harmonic Tool like as CorelDraw [duplicate]

I get a rectangle and a circle like following: The Harmonic Tool of CorelDraw can transition the rectangle to circle ...
235 views

How to resample a list of Images

I have a list of picture(Noting the ordering) first: second: third: forth: My target is get the 3D'image,Now I get the mask of it like following(If you use ...
150 views

default RGB coloring

I am playing with some basic genetic algorithms to recreate input images by transparent plane figures (similar like here:). Everything would work great but the speed is terrible. I was looking for a ...
198 views

“Spurious disk” detection with ComponentMeasurements

Using this code a third "spurious" disk is detected. ...
569 views

Remove country flags that match a certain image pattern

I wanted to create the flag you create when you average over all the flags of the world, for this little post: medium ...
73 views

Detecting and measuring an ellipse in a glaucoma photo? [duplicate]

I've tried the solutions given in How to find a circular object in the image glaucoma? to detect the ellipse, but the detection results are not quite what I wanted. In glaucoma we have a cup to disk ...
1k views

Detecting an ellipse in a glaucoma photo

For glaucoma diagnosis it is common to determine a "cup to disk ratio" which compares the diameter of the optic disk (VDD) and optic cup (VCD). The optical disk is visible as a circular red feature (...
80 views

Converting x,y pairs to an image: alternative to Histogram3D for sparse data?

I have a list of {x, y} integer pairs representing single events in pixel coordinates in the {x, y} plane, with occasional ...
169 views

How to find analytical expresion for data from image

I need to find an analytical expression for the data collected from an image. I found a relevant topic on how to extract the data in here. But there are some differences in my question. I have this ...
63 views

Creating rectangles from “ImageCorners” output

I want to create multiple rectangle areas from this image where the rectangle would be defined by the points on the edges of the outer most squares - dont mind the inner ones. In the end there ...
147 views

Calculating consumed internet data from bitmap of chart

My internet connection has a speed drawn up by the y axes has a scale as KB per second. and the x axes is time elapsed. if the x axes be from 0 to 40 minutes how can I calculate total consumed ...
70 views

Scan over array of images

I would like to take in an array of images as input, and then call the ColorSeparate function on each of them, and retrieve this as output. So far I have the following : ...
75 views

How to determine the value of an angle starting from an image? [duplicate]

I have two lines drawn with Mathematica, how do I calculate the angle between these two lines to have the numeric value of that angle? Thank you
277 views

How to patch fingerprint ridges

I get a fingerprint: But as you see,there are some place is discontinuous,such as: The question is how to patch the discontinuous line according its gradient?The only one thing that I can think ...
22 views

How to get an image when having indices of pixels [duplicate]

I am doing a perspective projection of a list of voxel V={v1,v2,v3,...,vn} using the perspective projection matrix 3*4 to get the indices of each pixel pi=(xi,yi). pi=P*vi Once I get the indices, I ...
288 views

Creating a colour variation effect of the Northern Lights

As is well known (see https://www.youtube.com/watch?v=fVsONlc3OUY ), the Northern Lights or Auroral displays appear as variations of several colours (generally pale green and pink). Is there a ...
94 views

Rotating an image if the height is larger than width?

I would like to rotate an image if and only if, the aspect ratio of the image is > 1, else just print the original picture and afterwards use the data. My problem is that Mathematica writes "...
189 views

Image transformation to break up connected components

I have a picture of a bunch of sphere, and I want to calculate the centroid of each sphere on the plane and generate the Voronoi diagram for it. But (1) In the picture the sphere are contacting each ...
701 views

Convert binary voxel image to geometric region

I have a binary voxel image which described a contiguous region in space. Example: ...
201 views

PixelValues along a straight Line [duplicate]

UPDATE to the question I have reformulated the question in order to make it distinct from the one suggested as a duplicate: "Line Intensity Profile From Image." The key difference is that I'm ...
100 views

Tracking movement via ImageFeatureTracking doesn't work [closed]

I have a series of 37 b/w microscopy photos. The whole sample shifts slightly (by ~10 pixels) from photo to photo (systematic error). See an example photo here and download two photos pos4_0.dat and ...
262 views

Circular crop: extract non rectangular parts of an image

I want to extract a part of an image. For example, let's start with something like the following image: I would like to apply some image processing to get this result: I have tried to ...
235 views

How can I delineate the outline of a complex shape?

I have a picture of a lake as follows: And I want to delineate the outline of the lake. I binarized the picture and obtained img: ...
45 views

In a list of Disk, how to efficiently delete Disk which are close to other Disk? [duplicate]

I want to draw pictrue like this: My code is: ...