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Chuyển đổi hoàn hảo các định dạng Office sang hình ảnh và PDF pps
... chuyển đổi trực tuyến khác Nhấn nút Encrypt để thiết lập chế độ bảo mật cho file PDF Bạn bảo vệ tập tin mật hay ngăn không cho cho người khác in tài liệu: Ngoài bạn đóng dấu quyền cho tài liệu Nhấn...
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Ứng dụng công cụ Kể chuyện bằng hình ảnh kỹ thuật số trong việc cải thiện kĩ năng trình bày tiếng Anh cho sinh viên năm nhất chuyên ngữ trường Cao đẳng Sư phạm
... productivity software such as MS PowerPoint or similar presentation tools as well as with more specialized software solutions In this study, the students are instructed to use the software Photo ... designing DS outside class and some hours presenting in class They have to attend speaking lessons which require them to frequently present in class Mid-term test also requires them to work in groups ... students stated that they had not have computers yet so they sometimes felt annoying to use or borrow others’ computers That was also the reason why four of them saw that designing DS to use in...
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Tài liệu Xử lý hình ảnh kỹ thuật số P1 ppt
... luminance, or some converted or corrupted physical representation of the luminance, whereas in a color imaging system, F ( x, y, t ) signifies one of the tristimulus values, or some function ... amplitudeweighted Dirac delta functions by the sifting integral, F ( x, y ) = ∞ ∞ ∫– ∞ ∫– ∞ F ( ξ, η )δ ( x – ξ, y – η ) d ξ dη (1.2-6) where F ( ξ, η ) is the weighting factor of the impulse located at ... have been reversed Also, the linear operator has been applied only to the term in the integrand that is dependent on the FIGURE1.2-1 Decomposition of image function 8 CONTINUOUS IMAGE MATHEMATICAL...
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Tài liệu Xử lý hình ảnh kỹ thuật số P2 pdf
... types of sensors, each sensitive over a different wavelength band It is interesting to note that there was no direct physiological evidence of the existence of three distinct types of sensors until ... post-retinal transfer functions H Li ( ω x, ω y ) of Figure 2.5-3 Undoubtedly, both retinal and post-retinal mechanisms are responsible for the chromatic adaption effect Further analysis and testing ... H Malitson, “The Solar Energy Spectrum,” Sky and Telescope, 29, 4, March 1965, 162–165 Munsell Book of Color, Munsell Color Co., Baltimore M H Pirenne, Vision and the Eye, 2nd ed., Associated...
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Tài liệu Xử lý hình ảnh kỹ thuật số P3 docx
... standard sources of light, as illustrated in Figure 3.1-2 (4) Source SA is a tungsten filament lamp Over the wavelength band 400 to 700 nm, source SB approximates direct sunlight, and source SC ... 1959, 1435–1442 H H Malitson, “The Solar Energy Spectrum,” Sky and Telescope, 29, 4, March 1965, 162–165 R D Larabee, “Spectral Emissivity of Tungsten,” J Optical of Society America, 49, 6, June ... reasons for transmitting the YIQ components rather than ˜ ˜ ˜ the gamma-corrected RN G N B N components directly from a color camera were two fold: The Y signal alone could be used with existing...
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Tài liệu Xử lý hình ảnh kỹ thuật số P4 pptx
... Deterministic Fields Let F I ( x, y ) denote a continuous, infinite-extent, ideal image field representing the luminance, photographic density, or some desired parameter of a physical image In a ... x, y ) over some finite resolution cell In the scanning system of Figure 4.2-1, the integration is inherently performed on the photodetector surface The image sample value of the resolution cell ... performed by linearly interpolating points along separable orthogonal coordinates of the continuous image field The resultant interpolated surface of Figure 4.3-4b, connecting pixels A, B, C, D, is...
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Tài liệu Xử lý hình ảnh kỹ thuật số P5 pdf
... covariance matrix of a Markov process, analogous to the continuous autocovariance function exp ( – α x ) Figure 5.3-1 contains a plot by Davisson (6) of the measured covariance of pixels along an ... found to be reasonably accurate for up to five pixel separations The discrete power-spectral density of a discrete image random process may be defined, in analogy with the continuous power spectrum ... – If the image source is statistically stationary, the first-order probability distribution of Eq 5.4-6 will be the same for all vector components q Furthermore, if the image source is ergodic,...
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Tài liệu Xử lý hình ảnh kỹ thuật số P6 pdf
... effect, the physical color solid is enclosed in a rectangular solid, which is then divided into rectangular quantization cells If the source tristimulus values are converted to some other coordinate ... which a nonlinear amplification weighting of the continuous signal to be quantized is performed, followed by linear quantization, followed by an inverse weighting of the quantized amplitude Thus, ... Assuming that an image sensor produces an output pixel sample proportional to the image intensity, a question of concern then is: Should the image intensity itself, or some function of the image...
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Tài liệu Xử lý hình ảnh kỹ thuật số P7 pdf
... applications in image processing require a discretization of the superposition integral relating the input and output continuous fields of a linear system For example, image blurring by an optical system, ... next step of the discrete representation, the continuous ideal image array ˜ F ( α, β ) is represented by mesh points on a rectangular grid of resolution ∆I and dimension ( 2K + ) × ( 2K + ) This ... (7.2-6) where K iL ≤ k i ≤ K iU , with K iU and K iL denoting the upper and lower index limits If the ultimate objective is to estimate the continuous ideal image field by processing the physical...
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Tài liệu Xử lý hình ảnh kỹ thuật số P8 pdf
... continuous sinusoids only for low frequencies; in fact, the 190 UNITARY TRANSFORMS FIGURE 8.2-1 Fourier transform basis functions, N = 16 highest-frequency basis function is a square wave Also, ... computed by reflecting the image about its edges to obtain a 2N × 2N array, taking the FFT of the array and then extracting the real parts of the Fourier transform (15) Algorithms also exist for the ... usually based on computational efficiency In some computing structures, the Hartley transform may be more efficiently computed, while in other computing environments, the Fourier transform may...
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Tài liệu Xử lý hình ảnh kỹ thuật số P9 docx
... The source image of Figure 9.3-3 is 512 × 512 pixels The source image of Figure 9.3-2 is 502 × 502 pixels It has been obtained by truncating the bottom 10 rows and right 10 columns of the source ... elements of T causing T to be sparse Also, it is often possible to render the filter matrix sparse by setting small-magnitude elements to zero without seriously affecting computational accuracy (1) ... transformation, and also the kernel T ( u 1, u ; w 1, w ) must be reasonably sparse; that is, it must contain many zero elements The generalized linear filtering process can also be defined in terms...
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Tài liệu Xử lý hình ảnh kỹ thuật số P10 docx
... might represent a valid signal pulse for a widebandwidth sensor, and the resultant image would suffer some loss of resolution Thus, in some cases the median filter will provide noise suppression, ... difference between the normal and lowresolution images, where c is a weighting constant Typically, c is in the range 3/5 to 5/6, so that the ratio of normal to low-resolution components in the masked ... will be continually altered by each successive pass Usually, the process will continue until the resultant period is greater than one-half the window width, but it can be shown that some sequences...
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Tài liệu Xử lý hình ảnh kỹ thuật số P11 pdf
... consisting of lenses, mirrors, prisms, and so on, can be considered to provide a deterministic transformation of an input spatial light distribution to some output spatial light distribution Also, ... 7.2 This is accomplished by truncating the sampling pulse equivalent impulse response P(x, y) to some spatial limits ± TP , and then extracting points from the continuous observed field FO(x, y) ... of Figure 11.4-1a, in which a continuous image field is subjected to a linear blur, the electrical sensor responds nonlinearly to its input intensity, and the sensor amplifier introduces additive...
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Tài liệu Xử lý hình ảnh kỹ thuật số P12 pdf
... usually measured by isolating the image of a suspected object within a picture By definition, the blur impulse response is the image of a point-source object Therefore, a point source in the observed ... Numerical Solution of Certain Integral Equations of the First Kind,” J Association for Computing Machinery, 9, 1964, 84-97 35 A N Tikonov, “Regularization of Incorrectly Posed Problems,” Soviet ... Twomey, “On the Numerical Solution of Fredholm Integral Equations of the First Kind by the Inversion of the Linear System Produced by Quadrature,” J Association for Computing Machinery, 10, 1963,...
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Tài liệu Xử lý hình ảnh kỹ thuật số P13 pptx
... rectangular destination array G ( j, k ) from a rectangular source array F ( p, q ) of the same size results in two types of ambiguity: some pixels of F ( p, q ) will map outside of G ( j, k ); and some ... various solutions for ( X, Y, Z ), all of which lie along a line from ( x i, y i ) in the image plane through the lens center Solving for the free variable z i in Eq 13.3-l0c and substituting into ... center If the desire of the mapping is to produce a complete destination array G ( j, k ) , it is necessary to access a sufficiently large source image F ( p, q ) to prevent mapping voids in G ( j,...
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Tài liệu Xử lý hình ảnh kỹ thuật số P14 pdf
... is also symmetric because of some of the conditional mark patterns of Table 14.3-2, which are necessary to ensure that objects of even dimension shrink to a single pixel For the same reason, ... visually distinct gray scale objects set against a gray background Also, it is assumed that the objects and background are both relatively spatially smooth Under these conditions, it is reasonable ... Image Processing with a Local Neighborhood Pipeline Processor,” Computer Graphics, Tokyo, 1984 18 H Blum, “A Transformation for Extracting New Descriptors of Shape,” in Symposium Models for Perception...
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Tài liệu Xử lý hình ảnh kỹ thuật số P15 docx
... this weighting is to give equal importance to each pixel in terms of its contribution to the spatial gradient Frei and Chen (4) have proposed north, south, east, and west weightings by K = so that ... arrays This figure also defines two other sets of gain-normalized impulse response arrays proposed by Robinson (12), called the Robinson three-level operator and the Robinson five-level operator, ... Laplacian of an image function F ( x, y ) in the continuous domain is defined as 470 EDGE DETECTION (a) Sobel, t = 0.07 (b) Sobel majority black (c) Sobel thinned (d ) FDOG, t = 0.11 (e ) FDOG thinned...
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Tài liệu Xử lý hình ảnh kỹ thuật số P16 doc
... useful for generating realistic appearing artificial scenes for applications such as airplane flight simulators Stochastic texture fields are also an extremely useful tool for investigating human perception ... generating probability density p ( W ) and the spatial operator, it is possible to create texture fields with specified statistical properties Consider a continuous amplitude pixel x at some coordinate ... non-Gaussian generating process (19) In this example, the texture appears identical in both fields, thus supporting the Julesz conjecture Gagalowicz has succeeded in generating a pair of texture...
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Tài liệu Xử lý hình ảnh kỹ thuật số P17 pdf
... projection segmentation technique is also discussed 17.1.1 Bilevel Luminance Thresholding Many images can be characterized as containing some object of interest of reasonably uniform brightness placed ... boundary 17.4.1 Curve-Fitting Edge Linking In some instances, edge map points of a broken segment boundary can be linked together to form a closed contour by curve-fitting methods If a priori ... shown in Figure 17.4-2 starting at point A and ending at point B, contains a single broken link Classical curve-fitting methods (29) such as Bezier polynomial or spline fitting can be used to fit...
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Tài liệu Xử lý hình ảnh kỹ thuật số P18 docx
... but not in the object, is a member of the convex deficiency Sklansky et al (4,5) have developed practical algorithms for computing the convex attributes of discretized objects 18.2 DISTANCE, PERIMETER, ... This function is also periodic over P and can therefore be expanded in a Fourier series for a shape description Bennett and MacDonald (24) have analyzed the discretization error associated with the ... 1969, 629–639 J Sklansky, “Recognizing Convex Blobs,” Proc International Joint Conference on Artificial Intelligence, D E Walker and L M Norton, Eds., May 1969, 107–116 J Sklansky, L P Cordella,...
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