Questions tagged [image]
Tag for questions about bitmapped graphics, particularly those using the Image function.
76
questions with no upvoted or accepted answers
15
votes
0answers
227 views
Is Mathematica 10 color managed?
With ColorProfileData Mathematica 10 can handle device-dependent color spaces. However images with embedded color profiles, e.g. ...
12
votes
0answers
186 views
Is it possible to search the web by image from Mathematica?
Is it possible to perform a web search based on an image input?
There are several services that provide this: Google, Bing, TinEye, and maybe others. I am not sure which can be accessed ...
11
votes
0answers
322 views
Efficient image stacking
I have a list of lists of images that I would like to stack and create mean images for each list of images.
Images are .jpg files 2592x1944 pixels large. Each list ...
10
votes
0answers
104 views
Tracking cells as they move under a microscope
I have a video (tiff file) of cells under a microscope and I'd like to segment and track the location and sizes of them across time:
It has a hundred frames:
I've uploaded it here (now it is public):...
9
votes
0answers
111 views
Why does repeated export of JPG-Images consume all memory?
I was looking in the history of asked questions for similar questions, but none of the alike questions answered my problem sufficiently. So I ask nevertheless.
My system memory is leaked by simple ...
7
votes
0answers
292 views
How to determine foci colocalization in a microscopy RGB image
I have a series of microscopy RGB images of the cell nucleus like this one
The red and green dots are clusters of different proteins and I would like to determine when these dots colocalize.
Through ...
7
votes
1answer
241 views
How to recreate this 3D plot?
In other languages, one can make a FeaturePlot3D-esque graphics where the inset images look realistically three dimensional. Meaning that they are smaller when farther away (and also hazier).
So how ...
6
votes
0answers
109 views
How to preview a list of images by sliding the mouse?
I'm trying to dynamically scrub over a list of images like in iphoto. Unfortunately, when the mouse moves from one side to the other, it's skipping frames which is confusing:
When the mouse runs off ...
5
votes
0answers
306 views
How to import an HEIC image?
As of iOS 11, iPhones save images with a new compression format HEIC. Now all my photos are all in this format and I'd like to import them to Mathematica but this is not a supported image filetype.
...
5
votes
0answers
745 views
How can I create jpeg images of a given file size?
Cross-posted at Wolfram Community
I would like to have a function makeJPG[megabytes_] that generates random jpg images of given file sizes with itf filesize (in megabytes) watermarked on the image ...
4
votes
0answers
163 views
Weird rasterization artifacts
When I try to rasterize circle with modified border thickness I get weird artifacts
Image[Graphics[{Thickness[.2],Circle[]}]]
Anyone knows any workaround how to ...
4
votes
0answers
202 views
Image processing- Identify regions in a segmented image to measure the dye intensities
I have split my image into the 3 channels each representing a different dye. I have segmented each image and I now want to 1) Identify each of the segmented regions and 2) Detect the level of dye ...
4
votes
0answers
348 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[] ...
4
votes
0answers
771 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 ...
4
votes
0answers
215 views
Problem importing individual frames from QuickTime file
I am having difficulties with a code I am trying to run. Essentially I want to
Read in a large .mov video file (60000+frames).
...
4
votes
0answers
172 views
Georeferenced bitmaps
The command Export["filename.jpg", graphic] will export the graphic object graphic to the file ...
4
votes
0answers
255 views
Single image import from stack via FTP connection
Background
I would like to create a CDF document that is embedded on a webpage. The CDF will contain some image display ...
3
votes
0answers
73 views
How to do your own Wolfram Function-of-the-Day style GIF?
Anyone know how Wolfram tweets out GIFs of a notebook running some code like this one?
https://twitter.com/WolframResearch/status/1083739334879182848
It's a lovely way to show how to build/iterate ...
3
votes
0answers
103 views
Image Processing: Detecting certain edge features over varying contrasts
Images and description-
• The images are obtained from the frames of a video (>1000 images)
• As shown, there are contrast variations between the images
• The bubble shifts horizontally ...
3
votes
0answers
145 views
Re-projection of full disk satellite image
I am trying to re-project a full disk satellite image (see below) downloaded from JMA to Mercator projection.
My understanding is that the image does not show the entire hemisphere (unless the ...
3
votes
0answers
48 views
Meaning/Format of RAW Image Data
I took photographs and I want to fit the (overall intensity or red intensity) of the photographs to a function of (x,y). I have some questions about how RAW data is structured. What is the difference ...
3
votes
0answers
250 views
How to set BitDepth and control dithering on exported GIF
Related: How to export a Graphics to PNG with BitDepth greater than 8?
I can't find a way to set the BitDepth of an exported GIF. It doesn't need to have great colour data, but I don't want to reduce ...
3
votes
0answers
186 views
Confocal Microscopy
Is it possible to direcly import Nikon ND2 files (e.g Confocal microscope 2D or 3D stacks files)?
Otherwise how can we import TIFFs of 3D stack and process it as a single "entity" so to speak?
...
3
votes
0answers
156 views
Identify and measure single bubble radius in series of images (TIFF)
I aim to make use of Mathematica's image processing capabilities to measure the radius of bubbles in consecutive images taken with a high-speed camera.
After searching through this website I have ...
3
votes
0answers
135 views
Frame text is cropped while exporting as EPS
I have generated an eps file with using Export["filename.eps", figure, "eps"], but the text on the frame labels and tick numbers are cropped like this:
Screenshot ...
3
votes
0answers
508 views
Import displays DICOM images as black rectangles (Mma v. 10)
My problem concerns Mathematica version 10.0.1.0 with OS X 10.9.4, OS X 10.9.5 and it does not occur in Mathematica version 9.0.1.0 (on the same computer and OS).
About 90% of my DICOM images are ...
3
votes
0answers
590 views
Method Shrinkwrap Messes up editting Graphics
If you try resizing or moving the Inset in the following interface, the Graphics becomes incredibly jerky and borderline ...
2
votes
0answers
53 views
Converting video file to list of images to analyze pixels of each frame
I am trying to recreate the following physics experiment to analyze chaotic motion:
https://www.researchgate.net/publication/275890532_Tracking_the_Motion_of_a_Double_Pendulum_Using_Mathematica
I ...
2
votes
0answers
30 views
Graphic scaling of neural network SummaryGraphics
Same funky scaling occurs when dragging the SummaryGraphics with the mouse; so, the issue is in the graphics itself not in the ...
2
votes
0answers
40 views
issue with ImageEffect; EdgeStylization
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 ...
2
votes
0answers
63 views
Smoothing a image while retaining the edges
In my previous post here it is mentioned that using ImageResize before ImageGraphics will increase image quality of the final ...
2
votes
0answers
56 views
Suppressing non-deterministic behavior in Image
The following issue is experienced in Mathematica 11.3 on Linux (debian 9) but I am pretty sure it was already present in version 10 on Linux.
The expression
...
2
votes
0answers
45 views
Identifying overlapping incomplete squares in image
I am trying to align my device and markers automatically using positioners driven by Mathematica. The camera feed looks like this:
The device is the black square with gold electrodes. The markers are ...
2
votes
0answers
87 views
How to achieve this fractal image transformation?
The app MirrorLab on Android has a very interesting Julia Effect, and I'd like to recreate this effect in Mathematica. Here are some examples of input images and their outputs:
...
2
votes
0answers
350 views
Export to PDF: DensityPlot & AllowRasterization->False
How to get production-quality vector graphic exported from Mathematica that looks like what is plotted in Mathematica. Example code:
...
2
votes
0answers
171 views
How to create 2D ImageHistogram?
Using ImageHistogram I can find the frequency of each color value in an image. Applying the same, I can have a histogram of its gradient values. I wish to combine these two on a log scale such that X -...
2
votes
0answers
70 views
Drag-and-drop image out of notebook
Drag-and-dropping images into notebooks works like a charm. But oftentimes I already have an image in a notebook and I want to use somewhere outside Mathematica. So we do this: right-clicking and ...
2
votes
0answers
300 views
How to image search on Twitter?
I'm looking for a function to download N images from Twitter with certain text in the tweet. Is there a better way to perform this search than this naive code:
...
2
votes
0answers
128 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
0answers
240 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?
2
votes
0answers
418 views
Understanding “IntensityData” coordinates
Update - Playing around a bit, is it true that we need to process the list of "IntensityData" values $r$ as follows:
r = Partition[r,k];
r = Transpose@r;
And ...
2
votes
0answers
335 views
Behavior of copy and paste with different image formats
Ok, let's say I create a 1x1 pixel image.
i = Image[{{0}}, "Byte"];
Now I Export["image.png", i] the image and import it into ...
2
votes
0answers
133 views
“automated” image embedding app
Based on the following image attach procedure, can a Dynamic app be developed that:
at start, only shows a small import button
once clicked, opens a choose image ...
1
vote
0answers
39 views
+50
How to download user faves on Flickr?
The Flickr service API doesn’t seem to have the getfavorites() request implemented. Is there an good way to do this with WebExecute?
Code to get started with:
For ...
1
vote
0answers
24 views
WebImageSearch for images of high resolution?
Is there a way to specify a minimal image dimension when using WebImageSearch? Since it costs money I don't want to do a large search and then filter the results.
...
1
vote
0answers
54 views
Image to coordinate system
May I kindly ask you to teach me how to align the symmetry axis (in blue) of the attached picture along the Ox and/or Oy axis. The axis of symmetry is slightly off (rotated to the right).
In other ...
1
vote
0answers
104 views
Saving in 2D and 3D in vectorial (pdf or svg) format
Good Day everybody,
I have difficulties to save both 2D and 3D plots in vectorial format.
I can get acceptable results if I save manually: righ-click on image, "Save Graphic as..." or "Print as...". ...
1
vote
0answers
65 views
Grouping components to form a complete perimeter
This is a question relating to grouping of components picked out using ComponentMeasurements to make a complete perimeter of a shape. My goal is to measure the perimeter of each of these worm-like ...
1
vote
0answers
64 views
Fitting a 2D array with two parameters to another 2D array
I am trying to fit an array to an image generated from real data. Here is the sample image:
This is a filtered magnetic dipole with some noise thrown in, and now I'm trying to fit my equation for a ...
1
vote
0answers
84 views
Revert image fusion using discrete wavelet transform
How can I extract a hidden image using discrete wavelet transform? I have used the function ImageFusion from this site to hide an image inside another one.
...
