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1
vote
1answer
65 views

How to complete boundary in masked image?

I am trying to generate a mask of the elliptical boundaries in this object. Any ideas on how I could complete the edge of a partially filled elliptical object? Thus far, I've obtained a mask that is ...
3
votes
1answer
83 views

Problem with ComponentMeasurements and property “Centroid” [closed]

I am showing here three test images to investigate the output of ComponentMeasurements when using the property "Centroid". <...
2
votes
2answers
79 views

Isolate black square in image

I have the image below and would like to isolate only the black square (on top of it are some brighter rings visible originating from an illumination lamp). How can that be done?
0
votes
0answers
39 views

Image Classification Using Local Maxima and Gradients

I can get all the local maxima using MaxDetect. For example, I have taken the image of Lena and found the local maxima using ...
4
votes
2answers
112 views

Using mask to segment growing cells over multiple timepoints

I am trying to segment some very irregular cells out of images generated by timelapse microscopy. These cells don't fit any simple shape (not circular or elliptical) and they grow and change shape ...
7
votes
2answers
320 views

Finding objects in images with inhomogeneous background

I have the following image where bright circular shaped objects are seen. The image has usually an inhomogeneous background and ...
2
votes
0answers
68 views

How can I analyse and manipulate k-space data of a DICOM imageset? [closed]

I'm very new to Mathematica. I've some MRI images as 3D DICOM data. I want to get the corresponding k-space data to identify all the signals with their corresponding amplitude, frequency and phase. ...
1
vote
1answer
79 views

Data fitted by two linear fits [duplicate]

can anybody help me please and tell me how to fit my set of points by two linear fits? It is always exactly two of them and are always linear and should cover all the data. The second line should ...
14
votes
2answers
617 views

Trainable WEKA segmentation of images

Is there a Mathematica equivalent of Trainable WEKA Segmentation as implemented in Fiji, the image processing software? A Google search did not return any relevant links. I attach the original image ...
19
votes
2answers
496 views

Get measurements of touching particles in an image

I have a picture of glass spheres. I want to calculate different properties of these spheres such as circularity, size, and count. I have managed to fill the white centers of the particles to ...
6
votes
2answers
467 views

Efficient way to perform local Otsu thresholding on image

I have images of cell nuclei that have locally varying intensity distributions. Therefore, I need a robust local threshold algorithm. LocalAdaptiveBinarize works ...
2
votes
1answer
73 views

RegionBinarize distance parameter has no effect

I'm trying to segment an object from background in noisy micro CT data. The original 3D volume data looks like this: ...
2
votes
0answers
84 views

Draw segment in arrayplot and get intensity value and coordinates in segment

I want to segment an arrayplot donut in to 6 pizza slices and export per segment the coordinates and intensity values of the pixels inside of it. I found a good example, which used RegionMember to ...
12
votes
4answers
517 views

Segmentation of a microscopy image with uneven illumination

I am trying to do a little image segmentation on some cells taken from microscopy images that have uneven illumination. I am having trouble getting the background of the image cleaned up after ...
19
votes
1answer
346 views

Segmentation of sunspots

I recently went for a walk with my camera and snapped a few pictures of the sun. The pictures didn't turn out too well, but this was to be expected without a telescope. I thought it might be a nice ...
20
votes
2answers
612 views

Object separation from a 2.5D surface

I'm trying to identify the shape and the boundaries of objects. The data was generated with a laser scanner and represent the surface of an area in which many boulders lay on the ground and making up ...
47
votes
2answers
3k views

Image segmentation and object separation in 3D using Mathematica

I currently work on an image segmentation scenario to detect cell nuclei in 3D using Mathematica. The data I have are image stacks in the TIFF file format. I would like to keep the sequence of image ...