Questions on the image processing capabilities implemented in Mathematica.

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5
votes
2answers
185 views

Reading grave stone letters in an image

(Click on image to enlarge) (Click on image to enlarge) Is there an image processing technique that would aid in reading the letters and numbers on a grave headstone? Most stones are etched ...
0
votes
0answers
49 views

Multiplying matrices which should multiply produces an error message [on hold]

I have developed a PCA (principal component analysis) method for any image. However, I get an error -- objects of unequal length -- when I try to compute "final data", and I really don't understand ...
2
votes
0answers
44 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 ...
5
votes
2answers
275 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 ...
4
votes
0answers
476 views

Masked Image Registration/Alignment/Correlation

I'm trying to register (align) two circular grayscale images using a boolean mask to prevent them simply being aligned on the fixed circular border. There are also small fixed circular regions in the ...
16
votes
2answers
476 views

Cluster a signal into areas of equal intensity

Introduction I have a greyscale photograph that I want to partition into areas of equal intensity. This means, that the integral over each partition should be (roughly) equal. There is no unique ...
3
votes
1answer
67 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: ...
2
votes
2answers
231 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: ...
5
votes
1answer
187 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 ...
7
votes
2answers
382 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?
3
votes
0answers
50 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 ...
0
votes
1answer
51 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.
12
votes
1answer
133 views

How to count the number of the tube

There is a picture Get the binary image binimg = ColorSeparate[img][[2]] // Binarize[#, 0.25] & // Thinning Visulize the result of regconization ...
12
votes
2answers
383 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 ...
4
votes
1answer
72 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 ...
1
vote
0answers
51 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 ...
76
votes
11answers
6k views

Artistic image vectorization

The question is how can we use Mathematica to create vectorized versions of low-resolution images? The goal is to get an image suitable for quality printing at any resolution. Since "true" ...
2
votes
0answers
54 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 ...
1
vote
1answer
63 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 ...
1
vote
1answer
93 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, ...
3
votes
0answers
27 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 ...
6
votes
1answer
117 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 ...
4
votes
1answer
89 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 ...
3
votes
1answer
85 views

ImageHistogram with logarithmic y scale

ImageHistogram is much faster than Histogram with ImageData. The only problem: I cannot ...
1
vote
1answer
75 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 ...
42
votes
1answer
1k views

Finding areas of beings in microscopic image

I've got lots of images of diatoms. I need to get a list of their equivalent radii. It's not crucial to get them all, as long as those missed don't mess with the radius distribution (as would ...
0
votes
1answer
107 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 ...
0
votes
2answers
60 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 ...
0
votes
1answer
35 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 ...
3
votes
0answers
64 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 ...
0
votes
0answers
38 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! ...
8
votes
2answers
315 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, ...
5
votes
2answers
371 views

How to count the number of n-gons and line intersections in an image of a complete graph?

I would like to count the number of line intersections and number of n-gons in a complete graph (which forms a regular polygon). The only way I've come up with that would allow me to do both in ...
4
votes
1answer
94 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 ...
18
votes
1answer
324 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: ...
3
votes
1answer
74 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 ...
4
votes
1answer
149 views

spherical histogram for 3D object

I want to develop a shperical histogram for 3D object. Given a 3D object, I put it in a cylinder where its axis pass through the centroid of the object. The cylinder is sampled into a number N of ...
12
votes
1answer
229 views
3
votes
0answers
139 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 ...
12
votes
1answer
311 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 ...
2
votes
0answers
125 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. ...
1
vote
0answers
38 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 ...
3
votes
3answers
156 views

Coloring image components according to their area

I have a rasterized image img that is created by this code: ...
9
votes
4answers
197 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: ...
14
votes
4answers
456 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 ...
9
votes
1answer
238 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 ...
5
votes
0answers
46 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 ...
6
votes
3answers
606 views

Opacity and overlapping multiple polygons

Let's say I have 100 polygons that are all different but most of them overlap. All I want to do is to draw/plot them in one single graphic with linearly adding gray values; i.e., a point with ...
2
votes
0answers
99 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 ...