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Jeff Mather


MathWorks

99 total contributions since 2004

I am a software engineer in the Image and Scientific Data Formats team of The MathWorks' Image Processing Group.
Professional Interests: File Formats, Digital Imaging, Color Science

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Answered
What is difference between dicomdisp vs dicominfo?
What you're seeing here is the hierarchical nature of DICOM files. The "FluenceMapSeqeuence" struct in the |dicominfo| output co...

11 months ago | 0

| accepted

Submitted


NRRD Format File Reader
Read imagery and metadata from .nrrd medical imaging format files.

1 year ago | 53 downloads |

Submitted


DICOM Example Files
Example DICOM files containing MR images of the brain.

1 year ago | 162 downloads |

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Submitted


Adobe Photoshop PSD file reader
Functions to read images and get metadata from Adobe Photoshop PSD files.

1 year ago | 2 downloads |

Posted


Read 12bit DICOM images
The 12-bit data is held in a 16-bit container, so you need to scale the values for display otherwise the images will appear (mos...

1 year ago | 3850 views

Responded


Re: Difficulties writing a Matlab program to deform a DICOM image set
Eleftherios, If you can read the data, you are most of the way there! Take a look at the imwarp function to perform arbitrary v...

1 year ago | 906 views

Responded


Re: adjusting a metafile of a DICOMDIR file
Hi Michiel, As you might have guessed DICOMDIR files are a bit special, and we haven't really done anything special to handle t...

2 years ago | 1180 views

Answered
size error for my own image in "Automatically Detect and Recognize Text in Natural Images" code
You can also silence this warning when you don't care to know that your images are being displayed at a lower resolution: w...

2 years ago | 1

| accepted

Responded


Re: 3D CT image reconstruction by 2D slices
snip] I'm going to go out on a limb and say that the 2D slices you have don't need "reconstruction," per se. They probably just...

5 years ago | 17209 views

Responded


Re: Imshow does not show the same image
Hi Amadeus, I suspect that OpenCV is scaling the display to match the data range instead of the dynamic range of the datatype, ...

5 years ago | 4595 views

Responded


Re: Creating 3D Dicom Image files
It's worth noting that DICOMWRITE *can* now create DICOM files containing multiframe images. That was introduced in R2011b. Jef...

5 years ago | 22393 views

Responded


Re: DICOMREAD out of memory with compressed DICOM
snip] Yes, that was precisely the problem, and it was fixed in R2011b. (It's still fixed in R2012a. :^) Jeff

5 years ago | 2097 views

Responded


Re: DICOMREAD out of memory with compressed DICOM
We fixed a problem with DICOMREAD leading to out-of-memory errors when reading some DICOM files with compressed data. I would re...

5 years ago | 2097 views

Responded


Re: Importing hundred images
What do you see if you leave the semicolon off the fgetl() lines? Does it show up empty? Also, when reading text files, you sh...

6 years ago | 4103 views

Responded


Re: ? remove dicom info
You are correct that it is not currently possible to remove those fields with DICOMANON. (They don't explicitly appear in the po...

6 years ago | 8316 views

Responded


Re: Errors with dicomwrite
Kerry Danelson" <kerry.danelson@gmail.com> wrote in message This was fixed in R2010a. If you're still running into it on newer...

6 years ago | 6699 views

Responded


Re: Error in dicomread: Unsupported data encoding
In a nutshell, this behavior is probably related to a private transfer syntax that DICOMREAD does not know about. It's legitima...

6 years ago | 8488 views

Responded


Re: Dicomread error: Unsupported data encoding
Jonas sent me a couple of image-less files that contain the transfer syntax, which is a private Philips explicit little-endian s...

6 years ago | 5776 views

Responded


Re: Error in dicomread: Unsupported data encoding
EDUARDO " <etoledop@hotmail.com> wrote in message > I have the same problem. Please tell me the solution. I have windows 7 and m...

6 years ago | 8488 views

Responded


Re: Support for DICOM Ophthalmic Tomography Class
It's true that DICOMWRITE does not support writing ophthalmic tomography images from scratch, but I see that you've already got ...

7 years ago | 2823 views

Responded


Re: Creating 3D Dicom Image files
Unfortunately it's not currently possible to write one DICOM file containing multiple image frames using DICOMWRITE. We've hear...

7 years ago | 22393 views

Responded


Re: Error in dicomread: Unsupported data encoding
That's surprising. Would it be possible for you to send me a file that triggers this error message so that I can look into it f...

7 years ago | 8488 views

Responded


Re: Error reading lossless compressed DICOM image
snip] Hi Laura, I suspect that there actually may be a problem with the JPEG data stored in the file if other applications are...

7 years ago | 4249 views

Submitted


Color Image Histogram
Display a histogram showing the color balance of an image.

7 years ago | 36 downloads |

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Submitted


hexdump - A binary file explorer
A GUI for file exploration: examine byte addresses, hex/char values.

7 years ago | 1 download |

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Submitted


Spectral and XYZ Color Functions
Label plots with spectra. Convert wavelengths to RGB. Functions for color matching and illuminants.

7 years ago | 57 downloads |

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Submitted


DPX file reader
A DPX file parser .

7 years ago | 2 downloads |

Submitted


DICOM debug utility
A tool to dump the contents of DICOM files for debugging

7 years ago | 2 downloads |

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Submitted


Film-like tone reproduction operator
A film-like tone mapping function for HDR images

7 years ago | 1 download |

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Responded


Re: Problem getting all meta data from DICOM-file
Fredrik, You are correct. DICOMINFO was not designed to read attributes including and beyond (7FE0,0010). That attribute is th...

7 years ago | 5175 views

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