MATLAB VIDEO AND IMAGE PROCESSING BLOCKSET 3 Guide de l'utilisateur télécharger pdf (Page 94)

4 Conversions

1 If the model you created in “Thresholding Intensity Images Using

Relational Ope rato rs” on page 4-2 is n ot open on your desktop, you can

open an equivalent model by typing

doc_conversion

at the MATLAB command prompt.

2 If you have not already done so, define an intensity image in the MATLAB

workspace. At the MATLAB com m a nd prompt, type

I= imre

ad('rice.png');

I is a 256-by-256 matrix of 8-bit unsigned integer values that range from 0

to 255.

3 Delete t

he Constant and the Relational Operator blocks in this model.

4 From the Video and Image Processing Blockset library, and then from the

Conversions library, click-and-drag an Autothreshold block into your m odel.

4-8

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MATLAB VIDEO AND IMAGE PROCESSING BLOCKSET 3 Guide de l'utilisateur Page 94