xử lý hình ảnh trong c
thí nghiệm mô phỏng xử lý hình ảnh y học
Ngày tải lên :
10/04/2013, 15:44
... tạo ảnh c a thiết bị MRI thông qua c c chế độ ứng với c c chuỗi xung
kh c nhau (Spin echo, Gradient nghị
ch đảo…) và trên sự điều chỉnh c c thông số c a c c loại
chuỗi xung này để cho ra c c hình ...
projection; c ng như nguyên lý c c bộ l c dùng để xử lý ảnh.
•
Th c hành c bản c ch vận hành c c lý thuyết trên trong bài toán mô phỏng sự tạo ảnh
c t lớp truyền qua bằng c ch lập trình trong ... h c Bách khoa TP.HCM.
C c bài thí nghiệm trên đư c thiết kế nhằm giúp sinh viên nắm vững một c ch c hệ thống
c c cơ sở vật lý nguyên lý hoạt động c c thiết bị, th c hành và phân tích c c yếu...
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Chèn và sử lý hình ảnh trong Powerpoint
Ngày tải lên :
30/08/2013, 08:10
... nơi chứa c c
file ảnh
Hộp thoại Insert Picture
Click chọn
Click
08/30/13 NguyenChiLuyen-N
hom ALG
9
THAY ĐỔI VỊ TRÍ ẢNH
THAY ĐỔI VỊ TRÍ ẢNH
C ch 1: Click chuột lên hình ảnh c n di chuyển để chọn ... NguyenChiLuyen-N
hom ALG
28
VẼ C C HÌNH Đ C BIỆT
VẼ C C HÌNH Đ C BIỆT
Click
C ch 1: Click chuột vào c ng c AutoShape
Nhóm lệnh vẽ đường
Nhóm lệnh vẽ đoạn nối
Nhóm lệnh vẽ c c hình mẫu c bản
Nhóm ... AutoShape
08/30/13 NguyenChiLuyen-N
hom ALG
2
CHÈN HÌNH ẢNH TỪ CLIP ART
CHÈN HÌNH ẢNH TỪ CLIP ART
C ch 1: Trường hợp chọn mẫu bố c c có sẵn trong Slide Layout
Click đúp để chèn
hình ảnh từ Clip Art
Xuất...
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Xử lý hình ảnh thông minh P3
Ngày tải lên :
17/10/2013, 22:15
... on a bicycle helmet, with an aremac
and a fixed focus camera that had sufficient depth of field (the author chose the
connectix QuickCam because of low cost). Purchasing 20 quickcams, receiving
donations ... the
absence of the camcorder. However, nearby subject matter 23 N will be distance d
e
,whichis
closer to the effective center of projection of the camcorder than distance d
e
to the effective
center ... focal distance of the eye. Both the camera and aremac then focus to approximately this
same distance. (c) Focus of right camera and both aremacs (including vergence) controlled by autofocus camera...
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Xử lý hình ảnh thông minh P4
Ngày tải lên :
20/10/2013, 17:15
... half-quadratic (biratic) function (4.34),
which is the comparametric equation corresponding to the quadratic equation,
is simple, but the comparametric equation corresponding to the cubic or quartic
function, ... constant correction. The scaling factor allows for an equicomparametric function with
equicomparametricity not necessarily equal to unity. A typical linear scaling saturation constant
of equicomparametricity ... is called a
comparametric equation [64]. Comparametric equations are a special case
of the more general class of equations called functional equations [80] and
comparametric plots are a special...
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Xử lý hình ảnh thông minh P5
Ngày tải lên :
24/10/2013, 15:15
... (depicted
by flash sync contacts X) is sent back by the camera’s outbound transmit channel depicted
OUTBOUND
Tx, to the artist (a) and received by the artist’s light source synchronization receiver,
depicted
OUTBOUND
Rx. ... the various comparametric functions introduced in Chapter 4, the power
of root over root plus constant correction model, or the saturated power of root
over root plus constant correction model, ... lightspace analysis function allows us to reconstruct natural-light
pictures of a scene, but not pictures taken by our choice of lighting. For example,
with the lightspace analysis function of...
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Xử lý hình ảnh thông minh P6
Ngày tải lên :
24/10/2013, 15:15
... cameras have a built in automatic gain control (AGC),
automatic shutter, or auto-iris that cannot be turned off. Many modern digitizers
to which cameras are connected have their own AGC, which ... AGC, which also cannot be
disabled. With AGC, the characteristic response function of the camera varies,
making it impossible to accurately describe one image as a projective coordinate
transformed ... is ‘‘dechirped’’ to g. The arrows indicate how a chosen cycle of chirp g
is mapped to the corresponding cycle of the sinusoid h. Fixing g and allowing a = 0, b,and
c to vary produces a class...
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Tài liệu Xử lý hình ảnh kỹ thuật số P1 ppt
Ngày tải lên :
24/12/2013, 09:17
... linear, space-invariant system. The analytic or
operational choice between the two approaches, convolution or Fourier processing,
is usually problem dependent.
1.4. IMAGE STOCHASTIC CHARACTERIZATION
The ... to be a member of a con-
tinuous three-dimensional stochastic process with space variables (x, y) and time
variable (t).
The stochastic process F(x, y, t) can be described completely by knowledge ... spatial autocorrelation function is often considered as the product
of x and y axis autocorrelation functions,
(1.4-15)
for computational simplicity. For scenes of manufactured objects, there...
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Tài liệu Xử lý hình ảnh kỹ thuật số P2 pdf
Ngày tải lên :
24/12/2013, 09:17
... metric significance. That is, a unit
distance within the color solid should represent a constant perceptual color
difference regardless of the particular pair of colors considered. The subject ... physio-
logical basis for the trichromatic theory of color vision.
When a light stimulus activates a rod or cone, a photochemical transition occurs,
producing a nerve impulse. The manner in which nerve ... Systems, Man and Cybernetics, SMC-7, 3, March
1977, 161–170.
29. J. J. McCann, “Human Color Perception,” in Color: Theory and Imaging Systems, R. A.
Enyard, Ed., Society of Photographic Scientists and...
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Tài liệu Xử lý hình ảnh kỹ thuật số P3 docx
Ngày tải lên :
24/12/2013, 09:17
... λ()λd
∫
=
YC() T
1
C( )YP
1
()T
2
C( )YP
2
()T
3
C( )YP
3
()++=
t
1
C( )
T
1
C( )
T
1
C( ) T
2
C( ) T
3
C( )++
=
T
1
C( )
t
1
C( )YC()
t
1
C( )YP
1
()t
2
C( )YP
2
()t
3
C( )YP
3
()++
=
T
2
C( )
t
2
C( )YC()
t
1
C( )YP
1
()t
2
C( )YP
2
()t
3
C( )YP
3
()++
... 0.008856
FIGURE 3.5-12. Gamma correction curve for the CCIR Rec. 709 primaries.
K
˜
k
K
˜
c
3
–
c
1
1 c
2
⁄
K
˜
c
4
=
K
˜
c
4
b≥
0.0 K
˜
c
4
b<≤
COLORIMETRY CONCEPTS
57
provided ... 3.2-3. Subtractive color matching.
T
1
C( )
A
1
C( )
A
1
W()
= T
2
C( )
A–
2
C( )
A
2
W()
= T
3
C( )
A–
3
C( )
A
3
W()
=
E λ()
A
1
W()A
2
W()A
3
W()
A
1
C( )A
2
C( )A
3
C( ),,
T
1
C( )T
2
C( )T
3
C( )
76
PHOTOMETRY...
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Tài liệu Xử lý hình ảnh kỹ thuật số P4 pptx
Ngày tải lên :
24/12/2013, 09:17
... reconstruction process
is considered for both theoretically exact and practical systems.
4.1. IMAGE SAMPLING AND RECONSTRUCTION CONCEPTS
In the design and analysis of image sampling and reconstruction ... a reconstructed function. This problem can be eliminated by generat-
ing a cubic convolution function (15,16), which forces the slope of the ends of the
interpolation to be zero. The cubic convolution ... all spectra
for which . With physical image reconstruction systems, these conditions are
impossible to achieve exactly. Consideration is now given to the effects of using
imperfect reconstruction...
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Tài liệu Xử lý hình ảnh kỹ thuật số P5 pdf
Ngày tải lên :
24/12/2013, 09:17
... product of row and column covariance func-
tions, then the covariance matrix of the image vector can be expressed as the direct
product of row and column covariance matrices. Under this condition
(5.3-14)
where ... r
j
Q
={}=
121
5
DISCRETE IMAGE MATHEMATICAL
CHARACTERIZATION
Chapter 1 presented a mathematical characterization of continuous image fields.
This chapter develops a vector-space algebra formalism ... function with
. Similarly, the covariance between lines can be modeled well with a
Markov covariance function with . If the horizontal and vertical covari-
ances were exactly separable, the covariance...
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Tài liệu Xử lý hình ảnh kỹ thuật số P6 pdf
Ngày tải lên :
24/12/2013, 09:17
... IEEE Publication 72 CH0 601-
5-NTC, National Telecommunications Conference 1972 Record, Houston, TX, Decem-
ber 1972.
REFERENCES
157
(6.3-7)
Thus, the coordinates of the quantized color become
(6.3-8)
subject ... image processing systems. Section 6.2 considers the processing of
quantized variables. The last section discusses the subjective effects of quantizing
monochrome and color images.
6.1. SCALAR QUANTIZATION
Figure ... a sequence
of uniform-length binary code words. In the literature, the binary code is often
called a pulse code modulation (PCM) code. Because uniform-length code words
are used for each image...
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Tài liệu Xử lý hình ảnh kỹ thuật số P7 pdf
Ngày tải lên :
24/12/2013, 09:17
... n
i
N≤≤
J
2
1×
k
E
Cf
E
=
J
2
J
2
×
JJ×
C
C
11,
00
…
0C
1 JL
–
2
+
,
… C
1 J,
C
21,
C
22,
0
…
00
·
0C
L 1
–
J,
C
21,
C
L 2,
0 … 0
0C
L 1
+
2,
0
0 … 0C
JJ L
–
1
+
,
C
JJ L
–
2
+
,
… C
JJ,
=
…
…
…
…
…
…
…
C
m
2
n
2
,
m
1
n
1
,()H
E
k
1
k
2
m
1
m
2
,;,()=
172
SUPERPOSITION ... can be extracted from circulant superposi-
tion operator C by use of selection matrices defined as (2)
1 n
i
J≤≤ 1 m
i
J≤≤ k
i
m
i
n
i
1+–()=
C
m
2
n
2
,
C
m
2
1 n
2
1
+
,
+
=
16 16× 33×
CC
C
C
R
⊗=
C
R
C
C
JJ×
C
R
h
R
1() ... Image Processing, 4, 1, March 1975, 1–24.
3. A. V. Oppenheim and R. W. Schaefer (Contributor), Digital Signal Processing, Prentice
Hall, Englewood Cliffs, NJ, 1975.
4. T. R. McCalla, Introduction...
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Tài liệu Xử lý hình ảnh kỹ thuật số P8 pdf
Ngày tải lên :
24/12/2013, 09:17
... transform coefficients that are small may be excluded from processing opera-
tions, such as filtering, without much loss in processing accuracy. Another applica-
tion in the field of image coding ... Hybrid
Discrete Cosine Transform and a Differential Pulse Code Modulator in Real Time,”
Proc. National Telecommunications Conference, San Diego, CA, December 1974, 61–
66.
16. W. H. Chen, C. Smith, ... TRANSFORMS
REFERENCES
1. H. C. Andrews, Computer Techniques in Image Processing, Academic Press, New York,
1970.
2. H. C. Andrews, “Two Dimensional Transforms,” in Topics in Applied Physics: Picture Pro-
cessing...
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Tài liệu Xử lý hình ảnh kỹ thuật số P9 docx
Ngày tải lên :
24/12/2013, 09:17
... the convolution
operator C is a circulant matrix, and the corresponding filter matrix
C
CC
C
is of diagonal
form. Actually, as can be seen from Eq. 9.1-6, the Fourier transform basis vectors
are ... One-dimensional window functions.
NN×
H uv,()1= 0 uC1–≤≤ 0 vC1–≤≤
0 uC1–≤≤ N 1 C + vN1–≤≤
N 1 C + uN1–≤≤ 0 vC1–≤≤
N 1 C + uN1–≤≤ N 1 C + vN1–≤≤
H uv,()0=
0 C 1 N 2⁄+≤<
232
LINEAR PROCESSING TECHNIQUES
impulse ... Nonrecursive
Digital Filters,” Proc. 4th Asilomar Conference on Circuits and Systems, Pacific Grove,
CA, November 1970.
9. B. R. Hunt, “Computational Considerations in Digital Image Enhancement,”...
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