imageSet Viewer

Posted by Avi Nehemiah, May 29, 2015

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Avi Nehemiah is the product marketing manager for computer vision applications.

Avi's pick of the week is imageSet viewer by Brett Shoelson.

My pick of the week is the imageSet Viewer user interface created by my friend Brett Shoelson. The biggest challenges I face when working with large sets of images(that are normally stored in several different directories) is it was difficult to bring the data into MATLAB, and interactively visualize the images.

The imageSet functionality in the Computer Vision System Toolbox helps me bring the data into MATLAB. I can bring all the images in a folder into MATLAB, and maintain the hierarchical relationship between folders using the imageSet. The image data I am using is from Caltech 101, collected by Fei-Fei Li, Marco Andreetto, and Marc 'Aurelio Ranzato. imageSet functionality is new in R2014b, you can learn more about it in the documentation .

imageData = imageSet('Data','recursive');

Now let's take a look at some of properties of the imageData variable I just created.

numImages = [imageData.Count]'
folderDescriptions = {imageData.Description}'

numImages =
          17
           8
           2
        2092
        2292
         472
         790
         770
         118
folderDescriptions = 
    'InteractiveTest'
    'InteractiveTest_NoiseCompare'
    'InteractiveTest_TestClassifier'
    'Motorbikes'
    'airplanes'
    'car_side'
    'Motorbikes'
    'airplanes'
    'car_side'

This is where the imageSet Viewer comes in to help me interactively visualize this data