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

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1
vote
1answer
124 views

How can I make images in the cell auto-adjust to some fixed-size

There is one auto-adjust item in the right-click menu of image in cell. And other related items are actual size and ...
5
votes
3answers
308 views

Getting RGBA data from an image

What is going on with returned data in the following examples? It appears ImageData returns different types depending on the what data is passed into ...
0
votes
0answers
145 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 ...
1
vote
1answer
133 views

How to get path and file name of a pasted image?

Say in Documentation Center -> ImageData -> EXAMPLES -> Basic Examples you find an image of a planetary body (Mars?). Can one obtain the file source for this image wich is copied into a Mathematica ...
22
votes
7answers
2k views

Embed Code Into Image

I often export images(plots, matrix, arrays, etc..) from mathematica which I end up putting in word documents or uploading to the web. The problem is that I often lose the original code and I am left ...
20
votes
4answers
2k views

How can I detect an ellipse in a photo?

I tried to detect the rim of the following cup as an ellipse. I've tried the solutions given in How to find circular objects in an image? to detect the ellipse, but the detection result was not ...
13
votes
2answers
381 views

Sharp background image in plot

How do I get rid of blurry transitions between pixels of the background image below. It's the fault of Texture[], previously discussed in this answer. I haven't ...
3
votes
1answer
145 views

Resampling when using image as Texture

How to get sharp pixel boundaries with Texture? I'd like to have only black/white in the example below, no gray. ...
2
votes
2answers
595 views

How can I import images from a Microsoft SQLServer database?

I have a table with binary data (images) in Microsoft SQlServer. I want to import that data and convert it into Image format. I wrote the following code, but it's ...
3
votes
1answer
697 views

Detection of horizontal lines in an image

Ok I'm trying to detect horizontal lines in an image. But the problem is that the line is quite obscure. So I'm not sure if it is even possible to extract that. I tried many different filters, but ...
5
votes
4answers
452 views

How can I return the color at a coordinate in an image?

I have an imported and cropped image: TestPicture = Import["filepath.jpg"]; TestPictureCropped = ImageCrop[TestPicture, Min[ImageDimensions[TestPicture]]]; How ...
7
votes
3answers
407 views

Combining Image3D and Graphics3D

I want to combine an Image3D and a Graphics3D using Show. Here is the code: ...
9
votes
3answers
2k views

Composing an image with a plot

I'm trying to illustrate the solutions to a textbook problem dealing with quadratic functions. This will involve plotting a quadratic and overlaying the plot and the image. Here is the textbook ...
3
votes
1answer
122 views

NetLink Exporting Images doesn't work (Unknown string escape)

Exporting Image files (intermittently) doesn't work: I get messages back indicating the error is to do with escaping characters: ...
5
votes
1answer
124 views

Scaling an image with “Drawing Tools” primitives on it

Imagine I doodle with the "Drawing tools" pen, or place lines on an image after importing it. Now say I want to scale this image by some constant factor $C$ while maintaining the same aspect ratio. ...
2
votes
2answers
261 views

Introduction of bias during brightness and contrast manipulation of an image

Quoting from Nature magazine's "Image integrity" guidelines: Processing (such as changing brightness and contrast) is appropriate only when it is applied equally across the entire image and is ...
4
votes
2answers
237 views

Mathematica averaging a big list of large images

I have a list of several hundred images, and I want to average the list to get a single image. Each image is 12bit TIFF with 2048*2048 pixels, and I am using the following to do the job: ...
11
votes
2answers
221 views

SaveDefinitions->True changes the displayed image

I have a Manipulate[ ] that displays an image with a superimposed Locator object. It works fine when I have ...
5
votes
2answers
116 views

Problem with Raster and custom ColorTable

Context Let me define two colour tables: (which come from brewer and xmedcom respectively) ...
3
votes
2answers
192 views

Using a given colour table with Image?

Context I would like to represent large images with a given colour table. Now, if I use Image ...
15
votes
2answers
2k views

How can I detect a rectangular region of interest in a picture?

Here is a downsampled input image I converted to greyscale. To select the rectangular region of interest we first preform preprocessing: ...
26
votes
5answers
957 views

Voronoi diagrams for generators other than points

Any suggestions how to determine Voronoi diagram for sites other than points, as e.g. in the picture below? Input is a raster image.
6
votes
1answer
118 views

How can I keep a plot's filled area from obstructing other lines when exported as EPS?

I am plotting several functions, some of which have fillings. After I combine all the functions together on a plot and export the plot to an EPS file, the fillings obstruct other lines. Exported PDF ...
0
votes
0answers
98 views

How do I get a plot with a certain size? [duplicate]

I am currently creating a poster for a conference in Scribus. I have a given space on the poster for a plot that I want to create with Mathematica. I don't want to scale in in Scribus, as this would ...
13
votes
1answer
283 views

High memory use while exporting a BMP

Something mysterious is going on when exporting images. I'm using Mathematica 9.0.1 on Windows 7 (64 bit), and find that the memory use is excessive when exporting to a bmp. But it doesn't happen ...
10
votes
1answer
292 views

Precise cropping with ImageCrop

The built-in ImageCrop function "effectively removes borders from image whose pixel value distribution is almost uniform" (emphasis mine). I need an efficient ...
6
votes
1answer
181 views

Estimate Imagesize of any given Particular Control object?

I make different controls(InputFields,Text,panel, etc) in my code for which the corresponding code is below. ...
5
votes
1answer
456 views

Volumetric analysis from topological maps

I want to calculate the volume of fill required to level an area about the size of three foodball fields. The Department of Public Works in my city can provide me with topo data for the area. Their ...
3
votes
1answer
266 views

Filter bright dots from the gradient of the image

I am wondering how to filter out bright dots in the picture, which are caused by background noise. I have used gradient filter in mathematica but it doesn't help. Is there anyway, that I can plot ...
4
votes
3answers
527 views

How to align dynamic graphics and an image within an Overlay?

I have dynamic graphics over an image but they won't line up, what am I doing wrong? ...
15
votes
1answer
677 views

How to extract metadata from an image of a business card?

I'm trying to digitize some documents, and I came across a very cool app called camscanner app which performs parallax transform and ocr very nicely, now I'm implementing it in mathematica... Given ...
3
votes
2answers
418 views

HSB -> HSL Converter

Starting from an image I would like to apply a custom filter to an image. I have thought and implemented this filter in HSL space and it goes like this : Boost the saturation of the pixels that ...
6
votes
1answer
179 views

Is it possible to render Graphics with more than “Byte” bitdepth?

I wonder is it possible to render Graphics in Mathematica with bitdepth higher than "Byte" which is the maximum bitdepth ...
19
votes
2answers
661 views

Why does ImageData need four times more memory?

Background We are dealing with very large TIFF image files that are imported, processed and exported using Mathematica 9.0.1. Many of our algorithms only work with an array representation of the ...
11
votes
2answers
698 views

Maximum size of TIF files in Mathematica

I have a question concerning the maximum size of TIFF files Mathematica can handle. According to the TIFF 6.0 specification -revision 6.0 (see: ...
4
votes
3answers
176 views

How to add images where each represents a different color channel?

So I have three matrices that represent say the R, G, and B channels of an image: ...
4
votes
2answers
251 views

How can I superimpose points or disks on an image at specified coordinates?

I have a TIFF image of 640 x 640 pixels, over which I would like to plot a list of points or disks of small radius. I have been testing different alternatives and I found ImageCompose command. ...
19
votes
2answers
786 views

How to generate a picture like this?

How to generate a picture like this? I'd like the surface of the manifold to randomly distort.
11
votes
2answers
1k views

Push-pin Art – Convert image to R-Y-B-W-Blk color space

After seeing an example of what is called “Push-pin Art”, I assumed that Mathematica would be able to handle the kind of image processing required to convert an image to this format. I am not well ...
5
votes
2answers
551 views

Force Plot Area size to be equal excluding axes

I have two plots, both with the exact same formatting (frame, text style, etc.). One of them has 2-digit values for the y axes, the other has scientific notation because the value are large. In ...
2
votes
2answers
390 views

Export grayscale png

The help for the Export function is absolutely unclear. How can I specify options for my output format? According to the documentation, PNG supports grayscale ...
4
votes
1answer
149 views

Force size in pixels of plot area excluding axes and labels

I have a matrix where each element represents a pixel. I want to plot the matrix (possibly with ArrayPlot). To suppress aliasing in the final graphic (which I will ...
10
votes
2answers
692 views

Rasterizing a plot make axes ticks invisible

I've evaluated this code: plot = Plot[x, {x, 0, 10}]; g = Rasterize[plot, ImageResolution -> 300]; Everything looks good except the ticks (on the axes); they ...
1
vote
1answer
270 views

How can I set an image size fully depending upon ImageSize?

I have an image assigned to myPicture myPicture = ...
6
votes
1answer
374 views

Export an image as a double precision TIFF

I would like to save an image as a double precision TIFF image. I have looked and tried many things but no luck. I have been able to import a double precision TIFF from IDL and found that the data was ...
0
votes
0answers
89 views

How to make 3d solid volume from set of images [duplicate]

Possible Duplicate: How to show solid bodies using volumetric rendering? I have a set of images, and I want to construct a z-stack, then reconstruct it to a 3d volume. My previous ...
0
votes
1answer
207 views

How can I remove orange-box around the Graphics3D?

I don't know whether this is a correct question or not, but I played from two days on this problem and still I didn't find a solution. The save button is enabled whenever we have to specify ...
1
vote
1answer
299 views

Making a screen icon by Mathematica

Is it possible to make within Mathematica an image file to be used as a screen icon? Could you kindly give an example?
2
votes
2answers
313 views

How can I overlap image on Graphics3D at a specific position?

I make a Polygon with size of {width=0,length=50,height=30}; I want to overlap Image on ...
2
votes
0answers
100 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 ...