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Image Processing Fundamental II Operation & Transform.

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Presentation on theme: "Image Processing Fundamental II Operation & Transform."— Presentation transcript:

1 Image Processing Fundamental II Operation & Transform

2 Digital Image Operation & Transformation  Digital Image Operation Arithmetic Operation Logic Operation  Transformation Translation Rotation Flip

3 Arithmetic Operation  The arithmetic operations between two pixels p and q are denoted as followed: Subtraction : p – q Addition : p + q Multiplication : p * q Division : p / q

4 Arithmetic Operation  Operation on entire images are carried out pixel by pixel.  If the result is real, truncate its value  If the result is over range, pick the maximum value  If the result if under range, pick the minimum value

5 Addition Operation 000 0100 0 0 0 0 0000 00 0 0 0 0 0 0 0 000 00 0200 0 100 200 0 0 0 000100 IMAGE 1 IMAGE 2IMAGE 1 + IMAGE 2

6 Subtraction Operation 000 0100 0 0 0 0 0000 00 0 0 0 0 0 0 0 000 -10000 00 0 100 0 0 0 0 000-100 IMAGE 1 IMAGE 2IMAGE 1 - IMAGE 2 0 0 Image subtraction is a basic tool in medical imaging, where it is used to remove static background information

7 Multiplication Operation 000 0100 0 0 0 0 0000 00 0 0 0 0 0 0 0 000 -10000 010000 0 0 0 0 0 0 000-100 IMAGE 1 IMAGE 2IMAGE 1 * IMAGE 2 0 0 255

8 Division Operation 000 0100 0 0 0 0 0000 00 0 0 0 0 0 0 0 000 -10000 01 0 0 01 0 0 0 000 IMAGE 1 IMAGE 2IMAGE 1 / IMAGE 2 0 0

9 Arithmetic Operation Let there is 1 input images p is denoted of a pixel in digital image and c is a constrain.  Addition : p + c  Subtraction : p – c  Multiplication : p * c  Division : p / c

10 Arithmetic Operation Example  Addition : p + 10  Subtraction : p – 10  Multiplication : p * 10  Division : p / 10

11 Logic Operation  Principal logic operations used in image processing are AND, OR, and COMPLEMENT, denoted as follows: AND : p AND q OR : p OR q NOT : NOT q

12 OR Operation 000 00 0 0 00 255 0 0 00 0 0 000 0 0 00 IMAGE 1 IMAGE 21 OR 2

13 AND Operation 000 00 0 0 00 255 0 0 00 0 0 000 000 00 0 0 00 0 0 0 0000 IMAGE 1 IMAGE 21 AND 2

14 AND Operation 000 00 0 0 00 255 0 0 0 0000 IMAGE 1 NOT IMAGE 1

15 Transformation translate rotateflip

16 Translation  It can be written in function as

17 Rotation  It can be written in function as

18 FLIP  Horizontal  Vertical MxN


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