... Processing Toolbox is a collection
of MATLAB functions (called M-functions or M-files) that extend the capabili-
ty of the MATLAB environment for the solution ofdigitalimage processing
problems. Other ... Edit.
The MATLAB Working Environment
In this section we give a brief overview of some important operational aspects
of using MATLAB.
1.7.1 The MATLAB Desktop
The MATLAB desktop is the main MATLAB ... state -of- the-art
software can be integrated into a prototyping environment whose objective is
to provide a set of well-supported tools for the solution of a broad class of
problems in digital image...
...
ways to plot an
image histogram.
(a)
imhist,
(b)
bar,
(c)
stem,
(d)
plot.
Digital Image
Processing
Using MATLAB
®
Second Edition
Rafael C. Gonzalez
University of Tennessee
Richard ... 0.75]. (d) Result of enhancing the image with
gamma = 2. (e) and (f) Results ofusing func-
tion
stretchlim as an automatic input into function imadjust.
(Original image courtesy of G. E. Medical ... opportunity to explain some of the plotting options in MATLAB that are
representative of those used in imageprocessing applications.
Histograms can be plotted also using bar graphs. For this...
... with Images in MATLAB
Image Types: Binary Images
• In a binary image, each pixel assumes one of only
two discrete values: 0 (off) and 1 (on).
>> imshow(bwImg)
Image ProcessingUsing MATLAB
Copyrighted ... Bhd.
Working with Images in MATLAB
Image Types: Index Images
• An indexed image consists of a data matrix, X, and a
colormap matrix, map.
>> imshow(indexImg, map)
Image ProcessingUsing MATLAB
Copyrighted ... with Images in MATLAB
Image Types: MATLAB Data Types Used
• A wide array of different data types exist in
MATLAB, but only a subset of the data types are
used to represent images in MATLAB.
Image...
... ‘ Using vectorization = %.3f\n ’ , tstop − tstart);
2.14 USINGMATLAB FOR PROCESSING SIGNALS
We are now in a position to use MATLAB to process some signals. Once a signal
is sampled (in digital ... perceptual quality of such images depends
on the display media and the relative size of the image, but it is quite clear that the
2 - bit image is unacceptable in terms of quality. We can repeat ... ′ MyImage.bmp ′ ;
[ImageMat cmap] = imread (FileName);
if (
˜
isempty (cmap) )
disp ( ′ This image has a colormap ′ );
end
[ImageHeight ImageWidth NumColorPlanes] = size (ImageMat);...
... trận
31.087.065.0
75.082.056.0
02.038.048.0
73.093.037.0
71.084.019.0
92.056.016.0
APPLICATION OFIMAGE PROCESSING
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Ĩ
Ĩ
NH V
NH V
Ự
Ự
LIÊN QUAN
LIÊN QUAN
APPLICATION OFIMAGE PROCESSING
APPLICATION OFIMAGE PROCESSING
APPLICATION OFIMAGE PROCESSING
Indexed Images
An ... matrix
rgb2ind
rgb2gray
mat2gray
ind2gray
gray2ind
ind2rgb
bw2ind
im2bw
im2bw
im2bw
Basics about imageprocessing in matlab
APPLICATION OFIMAGE PROCESSING
APPLICATION OFIMAGE PROCESSING
Traffic Monitoring
Ứng dụng trong giao ... etc.
... traditional image-
processing algorithms. The same is true for many Web applications using
server-side image processing, such as those based on ImageMagick. Thus image
processing is really at the base of ... for MacOS and Linux, consult the ImageJ installation
manual.
1
Digital Images
For a long time, using a computer to manipulate a digitalimage (i. e., digital
image processing) was something performed ... the category of tools above, digitalimageprocessing software
primarily aims at the requirements of algorithm and software developers, sci-
entists, and engineers working with images, where...
... xix
1
Introduction 15
1.1 What Is DigitalImage Processing? 15
1.2 The Origins ofDigitalImageProcessing 17
1.3 Examples of Fields that Use DigitalImageProcessing 21
1.3.1 Gamma-Ray Imaging ... Fundamental Steps in DigitalImageProcessing 39
1.5 Components of an ImageProcessing System 42
Summary 44
References and Further Reading 45
2
Digital Image Fundamentals 34
2.1 Elements of Visual Perception ... 45
2.3.1 Image Acquisition Using a Single Sensor 47
2.3.2 Image Acquisition Using Sensor Strips 48
2.3.3 Image Acquisition Using Sensor Arrays 49
2.3.4 A Simple Image Formation Model 50
2.4 Image...
... 1.18
Images of the Crab Pulsar (in the center of images) covering the electromagnetic spectrum.
(Courtesy of NASA.)
1.3
■
Examples of Fields that Use DigitalImage Processing
21
FIGURE 1.17
MRI images ... place of overlap be-
tween imageprocessing and image analysis is the area of recognition of indi-
vidual regions or objects in an image. Thus, what we call in this book digital
imageprocessing ... image
processing is intimately tied to the development of the digital computer. In fact,
digital images require so much storage and computational power that progress
in the field ofdigital image...
... groups of listeners.
PERCEPTUAL CODING OF HIGH QUALITY DIGITAL AUDIO
47
Figure 2.4 Example of a pre-echo. The lower curve (noise signal) shows the form of
the analysis window
Perception of imaging ... subjective
results of this validation are worse then those of the validation using music codecs.
1.8
COGNITIVE EFFECTS IN JUDGING AUDIO QUALITY
Although the results of the validation of the PAQM on ... courses in Computer Architecture, Digital Signal Processing and Audio
Engineering. In 1993 he was General Chair of the IEEE Workshop on Applications
of Signal Processing to Audio and Acoustics...