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Outline of Paper: “How many pixels make an image ?” Antonio T orralba. Roger S. Gaborski. This presentation is an outline of the paper “How many pixels make an image?” by Antonio Torralba Some material (images, graphs, etc.) taken from original paper .

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Outline of paper how many pixels make an image antonio t orralba

Outline of Paper: “How many pixels make an image?”Antonio Torralba

Roger S. Gaborski

Roger S. Gaborski


Roger S. Gaborski


2816 x 1880 pixels how many pixels do we really need
2816 x 1880 Pixels pixels make an image?”How many pixels do we really need?

Roger S. Gaborski


Gist of a scene
Gist of a scene pixels make an image?”

  • Gist of a scene- scene category and a few objects in the scene

  • What is the minimum resolution needed for scene recognition and object recognition?

Roger S. Gaborski


Image database
Image Database pixels make an image?”

  • http://people.csail.mit.edu/torralba/code/spatialenvelope/

  • Categories:

    • Coast

    • Forest

    • Highway

    • Inside city

    • Mountain

    • Open country

    • Street

    • Tall building

Roger S. Gaborski


Sample of partial code
Sample of partial code pixels make an image?”

img = imread('hous24.jpg');

img = im2double(img);

f = [ 1 1 1 1 1;...

1 4 4 4 1;...

1 4 6 4 1;...

1 4 4 4 1;...

1 1 1 1 1];

f = f/(sum(f(:)));

I256 = img;

I256f = imfilter(I256, f);

I128 = imresize(I256f,.5,'nearest'); %filterimagebeforesubsampling

Roger S. Gaborski


What is this image
What is this image? pixels make an image?”

Roger S. Gaborski


What is this image1
What is this image? pixels make an image?”

Roger S. Gaborski


What is this image2
What is this image? pixels make an image?”

Roger S. Gaborski


Roger S. Gaborski pixels make an image?”


Roger S. Gaborski pixels make an image?”


Roger S. Gaborski pixels make an image?”


Roger S. Gaborski pixels make an image?”


Roger S. Gaborski pixels make an image?”


Roger S. Gaborski pixels make an image?”


47 x 71 x 3 pixels make an image?”

21 x 31 x 3

Two individuals

Outdoor scene

Roger S. Gaborski


How many pixels make an image antonio torralba
“How many pixels make an image?” pixels make an image?”Antonio Torralba

Roger S. Gaborski


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