image-processing's questions - English 1answer

1.194 image-processing questions.

This is my target img: I can binarize it and select the mark component:bin = Opening[ColorNegate[Binarize[img, 0.8]], 4]...

seems that nothing happened while applying this code, new images are not aligned as can be proved by the ImageDistance output (103 pixels). ...

Seems that my code doesn't really align the Images, I don't understand why :( aperture = Table[Import["C:\Nim\images\"<>IntegerString[i]<>"\"<>IntegerString[j]<>".tiff"],{i,1,3},{j,0,9}...

Inspired by simon woods's wonderful shadow function, I want to add drop shadows to all the text of non-input/output cells in a notebook, something like this: By using simon woods's shadow function, I ...

For a puzzle I want to list pairs of Chinese cities. Once a line is drawn between each pair of cities the resulting lines will spell out a phrase in Chinese which is the answer to the puzzle. I've ...

Below you will see a diagram containing three curves. How can I extract data points from the three colored curves? I need to use the original data.

I have a grey scale image (1600*480 pixels, 8 bit): https://i.imgur.com/BqgJRv7.png (update) I want to determine the number of overexposed pixels in each column. Then I want to plot the a combined ...

I am trying to create FE meshes from vector or bitmap images and have come across the following issue. This is best shown using the following simplified code. ...

I would like to import 2D images to Mathematica and to use them to create meshed regions which can then be used for FEM. I create the images in Adobe illustrator so can either import a vector based ...

I have a scanned image (binary-ized): Is there any way to reduce one of these curved lines (full or dotted) to a series of its coordinates (e.g., sampling interval of 0.01 on x-axis)? I've read ...

I can import 70000 x 2MB TIFF images (~140GB) using Image`ImportExportDump`ImageReadTIFF in about 3 minutes based on @Szabolcs solution to this question by @Kagaratsch which is fantastic. ...

Bug introduced in 10.3 or earlier and persisting through 11.3 ...

I am struggling to work out how image coordinates are calculated and how to be consistent when finding particular points in an image using these coordinates for further analysis. I don't think it is ...

EDIT: Here is the complete code that i have used: ...

I found Mathematica can use OpenCV to improve face recognition in FindFaces: how to improve the results of the face recognition feature. But I tried this way and the kernel crashed. ...

Consider an image (img) as There are six different textures in the image and I want to segment them using region splitting and merging. The property that I wish to ...

I'm trying to combine several Manipulate objects into a single workflow, for semi-automating an image analysis. I have worked out how to do each individual part, ...

PixelShuffleLayer come from Real-Time_Single_Image. Firstly, a $C\times H\times W$ image, after a convolution, now $f^2\cdot C \times H\times W$, then sub-pix, finally get a $ C \times fH\times fW$ ...

I have a issue with ImageEffect/EdgeStylization. After importing a .jpg-file like test = Import["C:\\........\\DSCN0018_v1.jpg"]The result is: Then I take a ...

I'm very interested in visualizing complex valued functions $f:\mathbb{C} \rightarrow \mathbb{C}$. Especially interesting to me are Möbius transformations. I found a nice way of visualizing these ...

i am working at a color deconvolution using Ruifrok and Johnston's method (as described here). To get a custom stain, I need to realize a vector with mean RGB values of a region in a given image. So ...

I have identified a list of corresponding points on two different images manually. I have found the geometrical transformation between such sets of points using ...

I have a list of pictures:pictures = {im1,im2,im3,im4,im5,im6}Where im1: im2: im3: im4: im5: im6: I want to assign the pictures to labels (1,2,3,4,5 ...

I have a medical brain image from which I'm trying to isolate the brain (the gray pixels) from the rest (black and white parts). I'm looking for some functions that are best suited for this. Thanks

I want to detect circles that are embedded in noise. For this I created a few circles with some defined signal-to-noise ratio: ...

I have such images I want to draw a red line in every line content like this: If I accumulate the pixel value for every line, I can get the red curve line: ...

My answer to this question involved changing the white in a binary mask to a different color. I came up with a few ways to do this: ...

let b = let c = How to do:find[c,b]that returns the bounding box of c in b? Notes ...

Below is a map of India (img). and I can visualize it in the following way: ...

I want to write a program in Mathematica that takes an image and converts it into a drawing made completely of straight full-length lines. The program should check all the lines of the image, then ...

I have a website that supports video background, I've always used static pictures, but would like to change them into looping ken burns style videos where the image's crop slowly drifts around and ...

You may have seen this video: https://www.youtube.com/watch?v=QVuU2YCwHjw. How does this work, and how to do it with Mathematica?

I have a 3D image containing distance fields, and would like to produce a mesh region from a contour at a fixed level. I found two options for thisImageMesh[], ...

Bug probably present through all versions of Mathematica [CASE:4081592] Does Mathematica have a feature to set the pixel aspect ratio of 2D images? For example, ...

I need to put the circular image 1 in the image with the hole 2 (and cover the gap) the idea is to create an animated gif that shows the image 1 turning to the right and image 2 to the left in a size ...

In my previous post here it is mentioned that using ImageResize before ImageGraphics will increase image quality of the final ...

Often you can find slide presentation where the presenter is also shown on the same slide: When no pdf slides are available, I sometimes take scree shots of the video. However, I would like to remove ...

I have a black-white image, but it is rather blurry so I was thinking of converting it into vector graphics so I could do some coloring. This is the image: ...

I have an image segmentation and I'd like to label with a SwatchLegend[]. Here's a MWE: ...

I have a stack of DICOM images which have been used to create a 3D image. This image has been put through specific filters in order to isolate only the areas of interest and binarize the 3D image. I ...

I want to design a box in which I can move a set of items. Specifically, there should be N items (e.g. little balls with numbers inside). Items can be arranged with the mouse inside a box, and, in ...

I am a Mathematica newbie. I need to sample random points from an image which I have stored in a variable img as: ...

I recently learned that we can embed a whole PDF file into QR codes. But many online sites are not free for this service. Just wondering if Mathematica can do this? Note I don't want to convert the ...

I want to know about the mathematics behind white balance. I understand that it should be 3 different constants being applied to the red/green/blue channels. Thus I used ...

Note: Please see comments below @bobthechemist's answer for why question was edited. I've made a video of two teams playing soccer. Now I would like to translate each soccer-player to a (x,y) ...

Any suggestions on how to determine a Voronoi diagram for sites other than points, as e.g. in the picture below? The input is a raster image.

I was wondering, how one could compute the SSIM index in Mma ? The The structural SIMilarity (SSIM) index, which is a known method for measuring the similarity between two images. Here is the ...

I have four coordinates in the image, and I am interested in taking this polygon from the image. I try to do it in the following manner: Edit: I use the solution from the @kglr answer, unfortunately,...

I am trying to overlay two images as in the following (from here): I have a data in MS excel format here! (1) I want to select three columns for listdensityplot. This will serve as my background ...

I remember there was a GCHQ puzzle where Nonogram was created to generate a QR code in 2015. It was a quite popular puzzle. I am wondering if MMA can be used to create a Nonogram from an existing QR ...

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