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Questions tagged [scikit-image]

scikit-image is a Python image processing toolbox for SciPy.

scikit-image is a collection of algorithms for image processing with SciPy. The scikit-image SciKit extends scipy.ndimage to provide a versatile set of image processing routines.

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Python Scikit-image Install Failing Using Pip

I'm attempting to install scikit-image and am obtaining this error output message. I'm unsure how to actually display the text properly, so just a simple paste I have done. building 'skimage.external.tifffile._tifffile' extension compiling C…
Kyle
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How can I detect edges on an image of a document, and cut sections into seperate images?

The task is to take an image of a document, and leverage straight lines surrounding different 'sections' in order to split up the image into different documents for further parsing. Size of the different 'sections' is completely variable from page…
migsvult
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Sliding window in Python for GLCM calculation

I am trying to do texture analysis in a satellite imagery using GLCM algorithm. The scikit-image documentation is very helpful on that but for GLCM calculation we need a window size looping over the image. This is too slow in Python. I found many…
Johny
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Use scikit-image to read in an image buffer

I already have an in-memory file of an image. I would like to use skimage's io.imread (or equivalent) to read in the image. However, skimage.io.imread() take a file not a buffer example buffer:
benwiz
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Tricky filling holes in an image

I need to fill holes in images using python. This is the image with objects that I managed to get - they are really edges of objects I want, so I need to fill them. It seemed very straightforward using ndimage.binary_fill_holes(A), but the problem…
Phlya
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skimage resize giving weird output

I'm resizing an image using skimage.transform.resize but I'm getting a really weird output and I can't figure out why. Can anyone help? Here is my code: import matplotlib.pyplot as plt import skimage.transform plt.imshow(y) h,w,c = y.shape x =…
RHankins
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ssim image compare error ''window_shape incompatible with arr_in.shape"

I want to use ssim to compare similarity in 2 images. I'm getting this error window_shape is incompatible with arr_in.shape . Why? (What does it mean?) from skimage.measure import structural_similarity as ssim from skimage import io img1 =…
Alex
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Image convolution at specific points

Is there a way in scipy (or other similar library) to get the convolution of an image with a given kernel only at some desired points? I'm looking for something like: ndimage.convolve(image, kernel, mask=mask) Where mask contains True (or 1)…
Imanol Luengo
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fitting a circle to a binary image

I have been using skim age's thresholding algorithms to get some binary mask. For example, I obtain binary images like this: What I am trying to figure out is how can I fit a circle to this binary mask. The constraint is the circle should cover as…
Luca
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rotation matrix in openCV

I am creating a rotation matrix in python as follows: import numpy as np def make_rot(angle): cost = np.cos(np.deg2rad(angle)) sint = np.sin(np.deg2rad(angle)) rot = np.array([[cost, -sint, 0], [sint, cost, 0], …
Luca
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How can I extract the boundary curve of an image region in scikit-image?

How can I extract the boundary curve of an image region enumerated by measure.regionprops? By boundary curve, I mean a list of border pixels of the region in, say, clockwise direction around the region's perimeter, such that I can, for example,…
DCS
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Why is skimage.transform.rotate significantly slower than PIL's Image.rotate?

I'm in the process of converting some PIL-based code over to NumPy, but I've found that the skimage.transform.rotate function is significantly slower than PIL's Image.rotate. As a rough comparison, using skimage's rotate on a ~1000x1000 pixel image…
David Wolever
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Extract street network from a raster image

I have a 512x512 image of a street grid: I'd like to extract polylines for each of the streets in this image (large blue dots = intersections, small blue dots = points along polylines): I've tried a few techniques! One idea was to start with…
danvk
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Multi-curve detection in noisy images in Python

I have images similar to the one below. First of all, I am trying to detect the curves in these images. The curves I want to capture are marked on the image. Next, I want to fit these curves into the circle. I will use the radii of these circles as…
denizekiz
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skimage profile_line does not make sense

I´m trying to use measure profile to detect fluorescence in a serie of tubes so I write the following code import numpy as np import matplotlib.pyplot as plt from scipy import ndimage from skimage.measure import profile_line import os import…
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