Tag for questions about bitmapped graphics, particularly those using the Image function.

learn more… | top users | synonyms

14
votes
1answer
134 views
+50

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 ...
13
votes
1answer
169 views

What governs images resizing in the FrontEnd environment

What is responsible for the middle Row images' size? And why single image row is different? ...
12
votes
4answers
913 views

Reproduce image effect in Mathematica

How do I create the "dotifying" effect below in Mathematica? I have tried to use Rasterize first to get the image pixelated, but how do I get the disc/circle ...
3
votes
2answers
816 views

video image recognition [closed]

Has anybody experience with video and image recognition? I've made a video of two teams playing soccer. Now I would like to translate each soccer-player to a (x,y) coordinate and follow them during ...
6
votes
1answer
188 views

Rendering a 3D volume with Image3D

I have 2D JPEG images, of 1024 x 1024 pixels, corresponding to a 500 x 500 square micron section. These images are taken from slices of tissue, each slice seperated by 10 microns. I've been trying to ...
0
votes
1answer
57 views

Why does the function Image not yield a proper output?

Can I get the exact reason why the function Image doesn't yield a proper output in the below? Image[TreeForm@{1, 2, 3}] It ...
19
votes
3answers
1k views

Detecting X or O in a small image

I am making a robot that plays Tic Tac Toe Currently, I have code that will parse the board and separate it into an array of 9 images, each space on the board. How can I detect if the image ...
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 ...
2
votes
1answer
77 views

How to make image3d smaller? Is `ImageResolution` useful?

I want to make the output of Image3D much smaller. For example ...
14
votes
1answer
178 views

Grid cuts my images

Bug introduced in V9.0 or earlier and persisting through V10.3.1. pic2 = ImageResize[ ImageCrop@Rasterize@Graphics@Disk[], {Automatic, 40}] ...
5
votes
1answer
188 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 ...
1
vote
0answers
28 views

Function with many lines that takes image as parameter not returning same result as if I run the same lines of code

Running the exact same lines of code in a function produces just a return of the original image without any points identified, whereas when I run the exact body of the function line by line it works ...
8
votes
2answers
107 views

Slice a mathematica image into sub images along black straight lines?

I have a tic tac toe board I want to dynamically process in mathematica to have my robot play a user in tic tac toe. In order to determine the users move, I want to slice the board into 9 images, ...
5
votes
1answer
95 views

Shadows interfering with image processing

I am currently working on processing a tic tac toe board to have a robot play a human user. As the lighting changed throughout the day, the image became more difficult to process. Is there a way to ...
1
vote
1answer
64 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 ...
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 ...
2
votes
1answer
103 views

How to use manipulate to draw an image pixel by pixel

I want to draw an image pixel by pixel using Manipulate. My code almost works but it erases the old points each time. ...
3
votes
2answers
110 views

How to import 12-bit TIFF image

I have a CMOS camera which records images at 12 bit resolution. The camera software allows to save them as 12-bit TIFs. However, Mathematica cannot import this: ...
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! ...
3
votes
0answers
52 views

How can I import from a usb webcam on the raspberry pi?

I'm trying to set up a raspberry pi as a webcam server and I need to import images into a mathematica notebook on the raspberry pi. I tried using CurrentImage[] just to test it but I got an error just ...
1
vote
0answers
46 views

FindPeaks “expecting an image” [closed]

I am trying to use FindPeaks for a list of data, but when I have tried to use it it returns an error. I went to the help menu for the function to check that everything is in the correct format, and ...
3
votes
2answers
164 views

Filling a rectangle with an image

Say I have some rectangles of different sizes drawn on the screen. How can I fill them all with the same image? Ideally, the image would be resized to completely fill each rectangle. I've been trying ...
3
votes
1answer
81 views
6
votes
1answer
95 views

Extracting PNG images from AVI movie

I have written the following code to extract all images from an uncompressed AVI movie and to save them as sequential PNGs. ...
18
votes
1answer
327 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: ...
0
votes
1answer
36 views

Exporting multiple sizes of the same image

I have generated an image using (for example) out = Plot[x^2, {x, -2, 0}, PlotLegends -> {x^2}] and would like to export two versions of that image, one that ...
14
votes
2answers
308 views

SaveDefinitions->True changes the displayed image

Bug introduced in 9.0.1 or earlier and persisting through 10.3.1 or later I have a Manipulate[ ] that displays an image with a superimposed ...
12
votes
1answer
230 views
3
votes
0answers
96 views

Transparent bitmaps in controllers. Problem with initial appearance

Bug introduced in V9.0 or earlier and persisting through 10.3.1 or later I have a problem with images with alpha channel which I want to use as labels on Button ...
17
votes
1answer
1k views

Slow import of multigigabyte TIF image stacks

Update 6: After contacting Wolfram Technical Support, I was advised that the frame-to-frame import timing variability can be eliminated by reading in the frame stack from frame to frame with the ...
1
vote
1answer
90 views

How can I run my API on an image?

I've built an API that takes a url of an image as an argument. Using Import[] I can easily call my API on any url and get the results... but I need to run it on an ...
3
votes
3answers
158 views

Use custom frame ticks on an image

I chose as an example a familiar figure! img = Import["Lena.jpg"]; Now let's confine her inside a frame ...
2
votes
1answer
413 views

Understanding the difference between matrix indices and image coordinates in context of ListDensityPlot

In Mathematica help it's written that: ListDensityPlot[array] -> generates a smooth density plot from an array of values. ...
1
vote
1answer
46 views

Edit header information of a DICOM file and export it again

I have some DICOM files and want to edit a part of the Header and export the DICOM files with this edited header. I know how to Import a DICOM files and extract the Header Information, but how to ...
0
votes
0answers
42 views

Copy an image into a cell will auto generate an inline Cell

Copy/Cut an Image from a cell into another, will auto generate an inline cell. Sometimes I just want to copy/cut an image into a Text-Style Cell, the below image ...
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 ...
2
votes
0answers
33 views

Exporting or save graph to pdf, when will the rasterization occur?

For simple graph Plot[Sin[x], {x, 0, 10}] No matter right click save as pdf or export as pdf, the result is vector image. But for ...
2
votes
1answer
195 views

Copying each object in a plot separately as an image

I would like to copy a plot from Mathematica as an image, into a PowerPoint slide. This plot has two curves. When I try to do the (naïve) usual "copy graphics" and paste, I find the full plot (along ...
1
vote
1answer
43 views

Issue with ImageCrop and Rasterize

This is related to 1. I use the following code: ...
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 ...
4
votes
3answers
169 views

How to realize a Harmonic Tool like as CorelDraw [duplicate]

I get a rectangle and a circle like following: The Harmonic Tool of CorelDraw can transition the rectangle to circle ...
7
votes
2answers
212 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 ...
1
vote
0answers
69 views

Detecting and measuring an ellipse in a glaucoma photo? [duplicate]

I've tried the solutions given in How to find a circular object in the image glaucoma? to detect the ellipse, but the detection results are not quite what I wanted. In glaucoma we have a cup to disk ...
18
votes
1answer
290 views

Color degrades when using Copy As Bitmap

I have discovered a problem that affects my use of Mathematica. When I use the menu command Edit > Copy As > Bitmap the colors in the copy are subtly degraded. To make this more apparent I copied ...
2
votes
0answers
124 views

How to get the SIFT features of an image?

According to the documentation, the function KeyPoints[] computes features only using SURF, but what about SIFT or FAST features?
6
votes
2answers
187 views

How can you resize all the images in a notebook section?

I've pasted a large number of photos and they are too big which makes scrolling hard. Is there a way to automatically have Mathematica size them to 10% or something reasonable without have to click on ...
1
vote
2answers
123 views

ImageType used by ImageData

I have an image of type "Byte" (from ImageType[image]). When I perform calculations with ...
14
votes
2answers
2k views

Failure to export graphics by right-click when Notebook magnification is changed

Bug introduced in 9.0.1 or earlier and persisting through 10.3.0 or later When I try to export graphics as PNG, JPG and other rasterized formats using the right-click and choosing ...