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01_graylvlx - Introduction and Some Basic Gray Level...

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Introduction and Some Basic Gray Level Transformations COMP344 COMP344 Introduction and Some Basic Gray Level Transformations
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Enhancement Objectives makes an image more suitable than original for specific and problem-oriented applications is often for human perception , viewer is the ultimate judge of how well a particular works Examples COMP344 Introduction and Some Basic Gray Level Transformations
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Two Broad Categories 1 spatial domain works with pixels 2 frequency domain works with frequencies COMP344 Introduction and Some Basic Gray Level Transformations
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Spatial Domain f ( x , y ): input image g ( x , y ): output, processed or transformed image g ( x , y ) = T [ f ( x , y )] T : an operator on f ( T = transformation function) T is defined over some neighborhood of ( x , y ) e.g., square or rectangular sub-image area, or a point of 1 × 1 size COMP344 Introduction and Some Basic Gray Level Transformations
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Gray-Level Transformation Simplest form of T neighborhood is 1 × 1 (one pixel)
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This note was uploaded on 09/24/2010 for the course COMP 344 taught by Professor Albertk.wong during the Fall '09 term at HKUST.

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01_graylvlx - Introduction and Some Basic Gray Level...

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