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

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6
votes
1answer
48 views

Setting an image as the background of a GeoGraphics image

It's easy to set the background of a GeoGraphics image to black, e.g., ...
5
votes
0answers
111 views

Incorporating photos into a Mathematica-made web page

I use Mathematica to make my web page. I make various .nb files, usually with photos, and then use an Export command to convert the .nb file to an .html file with ...
10
votes
2answers
474 views

Generating uniform random points over a binary image

So I recently read this excellent post about generating random points over arbitrary regions. I hope Wolfram eventually builds that functionality into Mathematica's Random functions. I want to do this ...
1
vote
0answers
70 views

How it was made? [closed]

the source code is ...
1
vote
1answer
52 views

How to trim the image after rotating?

Want to rotate this image and then trim it. consider image=R6UgC.jpg; Imrot=Rotate[image, 2 Degree]; ImageTrim[Imrot, {{560, 400}, {900, 900}}] getting error ...
1
vote
1answer
70 views

How to scrape image search engines?

I'd like to download highest resolution images possible from the search results like these: ...
0
votes
0answers
48 views

Is it possible to import Matlab “.fig” files in Mathematica?

Is it possible to import a ".fig" file made in Matlab into Mathematica? If I try the usual Import[filename] it produces an error ...
0
votes
2answers
53 views

Help in evidencing a region (circular) of a .tiff image and cropping all the rest of the image

I'm asking for the community help since I have problems in cropping an image. I'm having LEED images which are 576*720p, which are made by a big black region at which middle I have the image I'm ...
1
vote
1answer
104 views

Make continuous 3D tube out of 2D image (Mathematica 8) [duplicate]

I have the following image with transparency: which I want to paste repeatedly into a 3D space to make it like a tube, something like this (but denser): I tried using the code from here but it ...
1
vote
2answers
62 views

Label point on plot with image instead of text [closed]

I can use this code to label my points with text. ...
2
votes
1answer
115 views

How to add a static JPEG into a Manipulate without slowing it down

I´m trying to add an image from a book into a Manipulate but it makes the Manipulate update very, very slowly. So much so that ...
0
votes
2answers
48 views

How do I color an Image generated from data such that one range of values is one color gradient and the others another color gradient [closed]

I can generate a Gray scale Image from some data that I collect. However I am trying to figure out how to generate the image with two color gradients or color scales based on the value. For example ...
7
votes
1answer
101 views

How to keep the non-overlapping parts when aligning images?

I would like to stitch together a pair of images. For example: ...
2
votes
3answers
203 views

Creating an image grid that displays a full-size image when a thumbnail in the grid is clicked on

I am working on some teaching resources and pulled a whole bunch of images off the internet to illustrate the idea of "angle". I can get Mathematica to import them and display them in a nice ...
5
votes
4answers
168 views

Coloring an image with two Color schemes based on a Range

I would like to color an image generated from some data using two colorschemes based on two ranges of the data. This is my attempt. ...
2
votes
1answer
60 views

How to save a bounding box on an image?

It's easy to save the coordinates of individual points, but for the life of me I can't seem to access the box's position and dimensions: {top, left, width, height}. How can I achieve this?
2
votes
2answers
135 views

Generating b/w bitmaps from a binary sequence

I would like to make a bitmap that visually represents a binary sequence, something like this: Where for example the 1's become a black pixel and the 0's a white one. I have never done something ...
1
vote
0answers
101 views

How to find soccer balls in an image? [closed]

I have 10k images and I need automatically remove only soccer balls, excluding other types (volleyballs, baseballs, etc...). I'd like to use computer vision methods of V10 to find their masks and ...
4
votes
1answer
115 views

How to label my training images?

I'm switching over Matlab, but I have a problem. Matlab has a GUI tool called the "Training Image Labeler" (shown below) that I use all the time to label my training data for my computer vision ...
0
votes
0answers
40 views

“Enlarge” a plot for export

I wish to export a plot with more resolution than it starts with. Interactively, I can do this by enlarging the image, and then exporting. Is there a way to do this programmatically? I attempted to ...
0
votes
0answers
52 views

Automatic measurement of components in a picture

I have a tricky problem, with which I'm stuck just after a few steps. I have the following picture of a slice of the brain. I want to detect all the named structures and measure the area of those ...
5
votes
2answers
182 views

Calculating displacement for a circular disc

I have to calculate the difference in diameter of two concentric circles. The image is obtained from an experiment and the data looks like this. The length required is the value of l as marked in ...
8
votes
0answers
105 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 ...
3
votes
2answers
76 views

How do I change the size of an imported picture in an animation?

My code right now plots a function, and animates an image moving along the curve of the function. I want to reduce the size of the image for this animation but I can't figure out how. If I try to ...
3
votes
2answers
60 views

How do I apply a ColorDataFunction[] to a grayscale image? [duplicate]

Suppose I have a 2D array im of real values between 0 and 1, representing a grayscale image. I can turn im into an image very ...
0
votes
0answers
41 views

How to export a PNG with an alpha channel?

Is "RGBA" not a supported colorspace? Export["test.png", RandomImage[1, {100, 100}], ColorSpace -> "RGBA"]
4
votes
1answer
134 views

HOWTO encode/decode large chunks of Mathematica code/results e.g. for posting on sites?

At times, we as questioners would like to post huge Mathematica-expressions to websites (e.g. mathematica.stackexchange.com), or have an easy way to get such code from a site. Above a certain size, ...
1
vote
1answer
103 views

Exporting File Outside Home Directory

When running Mathematica (v10) on my Raspberry Pi, I'd like to output an image file to a directory other than /home/pi. I understand that letting Mathematica write ...
0
votes
0answers
44 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 ...
1
vote
0answers
142 views

Using 2D Fourier transform of an image to detect typical wavelengths

I am new to Mathematica, and I have read this post to understand how to perform Fourier transform on an image. My mission is to extract information on the typical distance between the black patches in ...
1
vote
0answers
47 views

How can I union a set of images? [closed]

What is the best way to do image de-duplication in Mathematica. I've used a tool called Visipics in the past, which works well, but I need to do this in MMA. Basically the function I'm looking for, ...
4
votes
1answer
79 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 ...
4
votes
3answers
193 views

Inconsistent image sizing with Grid and Row?

Can anyone explain why Row and Grid don't size the image correctly and consistently to 300 ...
4
votes
0answers
96 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 ...
2
votes
1answer
163 views

How can I download images from Instagram and Twitter?

The new function ServiceExecute seems to suggest the ability to download images containing a specific hashtags. Can anyone get this to work?
1
vote
1answer
66 views

Get the path of the Image in Mathematica

When copying the Image from the hard drive to the Mathematica notebook, what can I do to have the path of the Image? I tried Imort[img] // Path where ...
2
votes
2answers
73 views

How to convert a coloured image according to the colorfunction I defined?

I got an image from a website which follows the colorfunction "Rainbow", e.g. ...
10
votes
1answer
226 views

How can I detect if an image is in or out of focus?

I need to filter out bad (blurry or ) images from a set, with some sort of blur detector.
4
votes
1answer
138 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 ...
3
votes
2answers
74 views

How do I use an image as a `ChartLabel`?

I'm trying to use an image as a ChartLabel and I'm getting strange results. Here is a bar chart, with labels, that looks ok: But when I try to replace the "A" ...
0
votes
0answers
46 views

Removing Perspective Distortion [duplicate]

Below is my input: I would like to remove perspective distortion from the image. Expected output below:
0
votes
0answers
35 views

coordinate system problem [duplicate]

I had an issue about the coordinate system of mathematica. I have a {800,600} image acquired with a camera. The projection matrix P of the camera is calculated using the calibration task. Now, when I ...
3
votes
0answers
93 views

My code does not give the same results on mathematica 9 and 10 [closed]

I have developed last year an algorithm using mathematica 9. In this algorithm, I remember that coordinate system of Image and Graphics are not the same. However, in mathematica 10 the coordinate ...
2
votes
0answers
93 views

How can I transfer colors from first image into second image? [duplicate]

How can I transfer colors from first image into second image, where every object from the first image should take the same object's color from first image. This images are only an example. this is ...
2
votes
2answers
269 views

Color Transfer from colored image into grayscale image

At first I did this where image is a grayscale image and example is a colored image ...
4
votes
1answer
194 views

Mask outliers in an image

I'm using Binarization/Morphological Operators to detect apples as objects, which has gotten me so far: I did get the mask using this code ...
0
votes
1answer
82 views

Extract ROI from image by hand into Matrix Form

I have a 3D Image (each pixel contains information for various wavelengths). I draw the image for one wavelength by using ...
2
votes
1answer
94 views

How can I adjust ContourPlot in Mathematica?

I have problem because of the max point and min point, when I have too high or low data point, it just make it white. Here is example of data ...
4
votes
0answers
93 views

How to determine foci colocalization in a microscopy RGB image

First of all thanks to everyone for the amazing amount of info and help provided here, I'm quite new to Mathematica so probably this is a very simple question but I'm not sure how to proceed. I have ...
1
vote
0answers
76 views

passing values between widgets in GUIKit

I am writing a short GUIKit script with one TextField widget that takes the path of the image and a button widget which imports the image. The problem I have is ...