Questions on the image processing capabilities implemented in Mathematica.

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10
votes
2answers
2k views

Overlapping accurately Images and Graphics (without loss of resolution)

Context In a previous post, I learned how to produce these kind of plots, which are of interest in astrophysics and geophysics. I am now interested in combining them. Attempt For this purpose, ...
10
votes
1answer
2k views

Construct 3D image from multiple 2D images

My goal: How to (1) construct 3D image for visualization. (2) how to write 3D array or image into binary raw file. Is there a way to accomplish this in Mathematica? Alternative_Answer for: ...
8
votes
1answer
604 views

Counting elements which are inside another element on a different colour channel

I have a 3-channel image which shows red and green points (certain labelled proteins) inside blue regions (cell nuclei). After applying some segmentation filters, the resulting image is as follows: ...
7
votes
1answer
641 views

Calculation of 2D FFT for an image

I am trying to obtain 2D FFT of an image. From the 2D FFT, I wish to calculate the amplitude of the FFT averaged over a circle vs the distance in pixels by varying the radius of the pixels which is ...
5
votes
1answer
231 views

Trace one point's coordinate values in sequentially images

I am a research student in a university. I think I need some help. I used a video camera to monitor the vibration of a plank. Then I should calculate the amplitude and frequency of the vibration ...
3
votes
1answer
1k views

Detection of horizontal lines in an image

Ok I'm trying to detect horizontal lines in an image. But the problem is that the line is quite obscure. So I'm not sure if it is even possible to extract that. I tried many different filters, but ...
0
votes
3answers
561 views

Derive a smooth circle with cusp from an image

question 1 get the center (sample data) sample is the black circle with cusp. ...
7
votes
2answers
252 views

Apply ColorFunction to an Image [duplicate]

is there a faster way to change the colors of an image from grayscale to something like this: ...
5
votes
2answers
718 views

Labelling objects in a picture with numbers

I need help processing a biology bacteria picture. I just started learning Mathematica and I hope you guys can use a simple method to help me solve the problem, please do not use super complicated ...
3
votes
2answers
93 views

Share a method to patch the discontinuous line in a image

Similar to this post which I have posted before(How to patch fingerprint ridges),Its solution's level higher than my expectation.So cost my these days to research this.Now I'm glad to share my fruit ...
3
votes
2answers
249 views

How can I capture a rectangular area from an image?

I am looking for a method to extract rectangular areas from an image. The image is divided up into rectangular problem spaces like the image shown below. Each numbered problem is given with some text ...
2
votes
1answer
212 views

Importation multiple dcm images [duplicate]

I'm extremely new to Mathematica. I want to import 201 .dcm (DICOM) files into Mathematica 9. Is there a way to do this which doesn't require my doing it an image at a time? My ultimate need to is to ...
7
votes
3answers
360 views

Coloured image transformation in pointillism

I would like to transform an image (a photo for example) into a set of single colour circles with fixed but adjustable diameter (bigger than the pixel size), into a kind of pointillism. The number of ...
6
votes
1answer
511 views

Removing gutter shadows from scanned pages

I am new to image processing, and I was hoping someone might set me in the right direction. I am trying to create a simple toolkit for personal use for digitizing scanned book images into a database. ...
5
votes
3answers
525 views

Tile image on specific location without space between them [duplicate]

Possible Duplicate: How to combine images with the same dimensions in a grid? I would like to arrange images without any space between their edges as each piece is made to connect with ...
2
votes
1answer
786 views

Importing a Canon Raw file (.CR2)

This is a very top level question with no code examples attached. I have an interest in using Mathematica to read raw files coming from a Canon camera, before they are converted into jpg's, where ...
2
votes
1answer
394 views

Selecting morphological components, of a certain size, centered on points of interest in an image

I have a set of points in an image, for example: ...
1
vote
2answers
314 views

Cropping a Plot without rasterization

Suppose that I make a plot of $x^2$ vs. $x$: myPlot = Plot[x^2, {x, -1, 1}, Frame -> True] If I click on the plot, I see the orange handles with which I can ...
1
vote
3answers
527 views

Adjusting the pixel values underlying a morphological component when computing an “IntensityCentroid”

When calculating an "IntensityCentroid" with ComponentMeasurements, i.e. for an image $I$ and set of components $C$, ...
0
votes
0answers
89 views

Selecting morphological components of a 3D image

This is a follow up of a previous question : Selecting morphological components by clicking on them? I followed the answer provided by Dr. belisarius. It works fine for 2D images. However, I can't ...
0
votes
1answer
192 views

TextRecognize with crosses, circles and spaces results into oddities, why?

I am investigating this answer here about detecting crosses and circles with TextRecognize. I tried to solve this problem here by directly using the builtin command TextRecognize but it does not work ...
8
votes
3answers
265 views

Applying a transformation rule on an Image

I haven't been able to figure out why the following doesn't work: ...
7
votes
2answers
231 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 ...
6
votes
1answer
134 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: ...
6
votes
3answers
1k views

Understanding Bilinear ImageResize

In trying to understand basic image transformations, I have attempted to code my own image resize function that uses bilinear interpolation. I checked my work against Mma's ...
6
votes
1answer
1k views

Extract data from plots in papers including error bars

I would like to know how to extract data from plots in a paper and, also, how to do that in a way that include error bars. I know there are specific softwares to do that, e.g. Plot Digitizer, which ...
2
votes
1answer
136 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
27
votes
4answers
5k views

How to create effect like Van Gogh's stroke brush?

I need to apply Van Gogh's stroke brush effect to a random image Take the following image as an example: Thank you so much if you could help!
35
votes
1answer
3k views

FindFaces: how to improve the results of the face recognition feature

In Mathematica 9, the FindFaces command offers an easy way to detect faces. In some experiments, I've been getting reasonable results, but I'd like to know if there ...
22
votes
7answers
2k views

Is there a way to recreate the typical Red/Blue-Postereffect using Mathematica?

I think nearly all of us have at least once seen an image like this: So I wondered whether it is possible to recreate this effect using Mathematica because it seems like it wouldn't need that many ...
15
votes
3answers
1k views

How to remove constant background from an image?

I'm not sure how to remove the paper background from this logo with v9. This is really not the same as this question, but I think similar methods apply.
26
votes
1answer
2k 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 ...
19
votes
1answer
254 views

Interstellar Image Effects

I'd like to know how to create this type of gravitational lensing effect in an image (here are some star fields from the hubble) "I wrote down the equations and I tested them in Mathematica by ...
31
votes
4answers
1k views

How to make a stereogram in Mathematica?

Given a background and a pattern jpg files, is there a quick and easy way to produce a stereogram by using Mathematica? The following picture was produced from Photoshop, spent about half an hour. ...
31
votes
2answers
1k views

Cleaning mildew from old documents using Mathematica (Image processing)

While visiting family over the holiday period, I managed to have some good mother-daughter bonding over how far back I’ve managed to trace the family tree (Mom is in her 80s and doesn’t do computers). ...
19
votes
2answers
377 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: ...
17
votes
1answer
475 views

Extracting road curves from an image

I have taken several gps readings while driving around town. ...
13
votes
1answer
431 views

How can I detect if an image is in or out of focus?

I need to filter out bad (blurry or ) images from a set, with some sort of blur detector.
27
votes
2answers
775 views

Counting radial ridges on an image

After happily using the v9 image assistant to crop elliptically an image, and then the drawing tools to put a white disk in the middle, I turned this image: into the following one: that can be ...
17
votes
2answers
1k views

How to measure segment length and branch angle

I am trying to measure segment length and branch angle or bifurcation angle between each pair of segments. My image after thinning looks like this: ...
14
votes
1answer
503 views

How to use 2D Fourier analysis to clean the noise in an image

I have some other method to do this.But I desire to know how to use Fourier analysis to realize it. I found a base post about Fourier-analysis to use in Image-Processing--Calculate the 2D Fourier ...
13
votes
1answer
803 views

Image Processing: Edge detection of the tumor on tomogram. Сalculation area of the tumor

The task is to identify the image region of the tumor. I try to use example from documentation centre: ...
13
votes
2answers
2k views

Push-pin Art – Convert image to R-Y-B-W-Blk color space

After seeing an example of what is called “Push-pin Art”, I assumed that Mathematica would be able to handle the kind of image processing required to convert an image to this format. I am not well ...
18
votes
1answer
1k views

Rotating perspective of an image in the z axis

A purely recreational question, but one I hoped the community would find interesting enough to suggest a way to approach it. Let me preface this question with the admission that I have done nothing ...
14
votes
4answers
742 views

Poor results with ImageLines function

I'm trying to get my mind wrapped around Mathematica's image feature recognition functions. I'm intrigued by the ImageLines function for a couple future ideas I ...
4
votes
5answers
791 views

How to calculate the position of a figure in an image?

My question is about recognising soccer players in the pitch. Thanks to Bill S who wrote an excellent script to recognise parts of the players. I found this issue after testing his solution. I will ...
21
votes
2answers
914 views

Is there a Mathematica barcode reader?

Is there a Mathematica barcode image reader (much like TextRecognize) that allows the user to enter an image of a barcode and then read it to get an output string?
13
votes
1answer
1k views

How to map an image to get an illusion of 3D

I would like to distort or map a given jpg so it looks 3D when viewed from certain angle, as in the following youtube video: http://www.youtube.com/watch?v=IfCCUd8mFtg. The most interesting part of ...
12
votes
1answer
408 views

How can I extract the outline of bubbles in my image?

I have an image: I tried to extract the outline of the bubbles, but I met with some problems. Firstly I tried the method used in Mathematica documentation for ...
10
votes
1answer
618 views

Removing the edge features of an image while enhancing internal connectors

I picked up the following leaf today while going for a walk. And wanted then to run the same analysis that @Vitaly Kaurov did for rivers under this posting Measuring Fractal Dimensions of natural ...