Saysal Grnt leme Teknikleri Do Dr Mehmet Serdar

Sayısal Görüntü İşleme Teknikleri Doç. Dr. Mehmet Serdar Güzel Slides are mainly adapted from the following course page: http: //www. comp. dit. ie/bmacnamee and https: //www. tutorialspoint. com/dip/

Lecturer Instructor: Assoc. Prof Dr. Mehmet S Güzel Office hours: Tuesday, 1: 30 -2: 30 pm Open door policy – don’t hesitate to stop by! Watch the course website Assignments, lab tutorials, lecture notes • slid e 2

Overlapping fields Machine/Computer vision Machine vision or computer vision deals with developing a system in which the input is an image and the output is some information. For example: Face Recognition System Computer graphics deals with the formation of images from object models, For example: Object rendering. Generating an image from an object model. Signal Processing Signal processing involves image processing. The amount of light reflected by an object in the physical world (3 d world) is pass through the lens of the camera and it becomes a 2 d signal and hence result in image formation. This image is then digitized using methods of signal processing and then this digital image is manipulated in DIP • slid e 3

History of Digital Image Processing Images taken from Gonzalez & Woods, Digital Image Processing (2002) Early 1920 s: One of the first applications of digital imaging was in the newspaper industry Early digital image

Images taken from Gonzalez & Woods, Digital Image Processing (2002) History of DIP (cont…) Mid to late 1920 s: Resulted in higher quality images New reproduction processes based on photographic techniques Increased number of tones in reproduced images Enhanced digital image 15 tone (level) digital image

History of DIP (cont…) 1990 s - Today: The use of digital image processing involves: Image enhancement/restoration Artistic effects Medical imaging Industrial examination Law execution Human computer interfaces

Image Enhancement

Examples: Artistic Effects

Images taken from Gonzalez & Woods, Digital Image Processing (2002) Medical Imaging

Images taken from Gonzalez & Woods, Digital Image Processing (2002) Examples: GIS Geographic Information Systems Digital image processing techniques are employed widely to manipulate satellite imagery Terrain classification Meteorology