huffman method with run length encoding
TIỂU LUẬN MÔN MẬT MÃ VÀ AN TOÀN DỮ LIỆU NÉN DỮ LIỆU ĐỘ DÀI HÀNG LOẠT RUN LENGTH ENCODING
... (RLE - Run length Encoding) , LempelZiv(LZ), Huffman, Delta Nếu phân loại phương pháp nén theo kích cỡ (size) liệu lấy từ liệu gốc để nén chia thành 04 nhóm: Method CS&Q Huffman Arithmetic Run- length, ... đổi Thay đổi Thay đổi Thay đổi Cố định NÉN DỮ LIỆU HÀNG LOẠT (RUN- LENGTH ENCODING) Thông tin chung Nén liệu hàng loạt - Run length Encoding (RLE) phương pháp nén không liệu RLE hoạt động làm việc ... I.CÁC PHƯƠNG PHÁP NÉN DỮ LIỆU II.NÉN DỮ LIỆU HÀNG LOẠT (RUN- LENGTH ENCODING) III.CHƯƠNG TRÌNH DEMO 12 IV.DANH MỤC TÀI LIỆU THAM KHẢO ...
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Nén dữ liệu Độ dài hàng loạt RLE: Run – Length Encoding
... DỮ LIỆU ĐỘ DÀI HÀNG LOẠT RUN LENGTH ENCODING Là phương pháp nén không liệu (Lossy Compression) Có thể áp dụng cho loại liệu NÉN DỮ LIỆU ĐỘ DÀI HÀNG LOẠT RUN LENGTH ENCODING Kỹ thuật nén ... (value) độ dài hàng loạt (run length) • Độ dài hàng loạt số lần lặp lại giá trị liền Ví dụ AAABBCCCCC A3B2C5 Các giá trị Độ dài hàng loạt NÉN DỮ LIỆU ĐỘ DÀI HÀNG LOẠT RUN LENGTH ENCODING ƯU ĐIỂM • ... Thuật toán nén giải nén cài đặt đơn giản so với kỹ thuật nén khác NÉN DỮ LIỆU ĐỘ DÀI HÀNG LOẠT RUN LENGTH ENCODING - RLE NHƯỢC ĐIỂM • Không hiệu việc nén liệu giá trị lặp lại • Có thể gây hiệu ứng...
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TÌM HIỂU KỸ THUẬT MÃ HÓA LOẠT DÀI – RLE (RUN LENGTH ENCODING) VÀ ỨNG DỤNG TRONG MÃ HÓA ẢNH BMP, PCX
... định Huffman Cố định Thay đổi Arithmetic Thay đổi Thay đổi Run – Length, LZW Thay đổi Cố định II KỸ THUẬT MÃ HÓA LỌAT DÀI – RLE (RUN LENGTH ENCODING) Thông tin chung Nén liệu hàng loạt – Run Length ... liệu nén liệu độ dài tieu-luan-mon-mat-ma-va-an-toan-duhàng loạt run length encoding lieu-nen-du-lieu-do-dai-hang-loat-runlength -encoding. htm Luận văn Tìm hiểu số phương pháp nén ảnh - Luận văn, ... loạt (RLE – Run Length Encoding) , Lempel – Ziv (LZ), Huffman, Delta Nếu phân loại phương pháp nén theo kích cỡ (size) liệu lấy từ liệu gốc để nén chia thành 04 nhóm: Kích cỡ nhóm Method Dữ liệu...
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Nghiên cứu nội dung giấu tin trong ảnh nói chung vμ kỹ thuật giấu tin trong ảnh nhị phân dựa trên phương pháp biến đổi biểu đồ run length
... giu tin nh - Nghiờn cu cu trỳc nh nh phõn - Tỡm hiu v nghiờn cu k thut giu tin da trờn biu RL (Run length) nh nh phõn b Các yêu cầu cần giải Lý thuyt - Hiu c cu trỳc c bn ca nh nh phõn - Nm rừ ... nội dung giấu tin ảnh nói chung kỹ thuật giấu tin ảnh nhị phân dựa ph-ơng pháp biến đổi biểu đồ Run Length Ng-ời h-ớng dẫn thứ hai: Họ tên: Học hàm, học vị: Cơ quan công ... giu tin - Chng Cu trỳc nh nh phõn - Chng Tỡm hiu k thut giu tin trờn nh nh phõn da trờn biu Run Length - Chng Kt qu thc nghim MC LC CHNG TNG QUAN V K THUT GIU TIN 11 1.1 nh ngha ...
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Tài liệu Báo cáo khoa học: "Extending the BLEU MT Evaluation Method with Frequency Weightings" pdf
... corpus, and is compared with the results of the baseline BLEU method with respect to their correlation with human evaluation scores The scores produced by the N-gram model with tf.idf and S-Score ... weighted evaluation scores with a single reference, two runs of the experiment were carried out The first run used the “Reference” human translation, while the second run used the “Expert” human ... translation was used) The scores for both runs were compared using a standard deviation measure The results of the MT evaluation with frequency weights With respect to evaluating MT systems, the...
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Báo cáo hóa học: " A novel asynchronous access method with binary interfaces" doc
... interfaces (HMI) Within this field, a synchronous access strategy may be defined as a method that requires users to comply with one or more time constraints in order to communicate intent with a minimal ... selection with substitution with probability of success p = 0.1 The middle gray trace corresponds to a selection without substitution p = 0.11 and the upper black trace corresponds to the proposed method ... theoretical evaluation of this method resulted in two significant conclusions: The proposed method may be used with binary interfaces to asynchronously access devices with any number of potential...
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Báo cáo hóa học: " Modified nonlinear conjugate gradient method with sufficient descent condition for unconstrained optimization" pptx
... VLS method with DSP-CG method, PRP method and CG-DESCENT method as follows: for the ith problem, compute the total numbers of function evaluations and gradient evaluations required by the VLS method, ... problem is not run by the method, we use a constant l = max{g i (method) |i Î S1} instead of γi0 (the method) , where S1 denotes the set of the test problems which can be run by the method The geometric ... the VLS method to the DSP-CG method, PRP method and CG-DESCENT method in the CPU time performance (see Figure 1) In Figure 1, X = τ , Y = P{log2 (rp,s ) ≤ τ : ≤ s ≤ ns } That is, for each method, ...
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Báo cáo hóa học: "Research Article A Modified Run-Length Coding towards the Realization of a RRO-NRDPWT-Based ECG Data Compression System" pdf
... Compression Scheme with the Modified Run- Length Coding The proposed RRO-NRDPWT-based ECG data compression scheme with the modified run- length coding is shown in Figure In the encoding process, the ... values for each j will be fitted with a quadratic EURASIP Journal on Advances in Signal Processing modified run- length method, respectively The algorithm of modified run length coding is described in ... Reconstructed ECG data ^J S∗ Encoding process Reversible round-off 1-D NRDPWT d∗ j Nonlinear quantization process ˜ d∗ j Modified run length encoding ˜ d∗ j Modified run length decoding QF Inverse...
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Báo cáo hóa học: " Research Article An MPSoC-Based QAM Modulation Architecture with Run-Time Load-Balancing" pdf
... design methodology to implement SDR systems, treating the modulator as an individual system task Results in [6] show that the problem with this approach is that several competing tasks running ... MPSoC-based architecture (with NIRA) to the architecture with pipelined QAM instances Performance simulations were first done for the system configuration listed in Table 1, with up to out of the 16 ... assumed to be a random variable with the corresponding distribution being exponential with mean 0.167 × 106 The stream arrivals at Stream-IN PEs were Poison processes with equal rates (Case R.5)...
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Báo cáo hóa học: " Research Article Automatic IP Generation of FFT/IFFT Processors with Word-Length Optimization for MIMO-OFDM Systems" doc
... 16 18 Fractional part word -length after truncation m Analytic results (with W64 ) m Simulated results (with W64 ) m Analytic results (with W512 ) m Simulated results (with W512 ) Figure 7: Analytic ... (m) (9) 3.3 Quantization Error after Truncation Two types of signal truncation are discussed here One is truncation after multiplication and the other is truncation after addition/subtraction ... squared error after truncation is ignored temporarily The word lengths of the output at each stage after truncation are also indicated It can be seen that if there is no truncation after the PE...
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báo cáo hóa học:" Review Article An Overview of the Lower and Upper Solutions Method with Nonlinear Boundary Value Conditions" doc
... problem has been studied in combination with the method of lower and upper solutions is due to De Coster in 50 , who considers 3.1 without dependence on u coupled with Dirichlet conditions Moreover, ... suitable truncated problem is the following: u t F t, u t , u t ≡ f t, p t, u t , q d p t, u t dt , 1.19 Boundary Value Problems coupled with the corresponding boundary value conditions This truncation ... t , t ∈ I, 3.2 with ϕ an operator that satisfies the above mentioned properties After this paper, the method of lower and upper solutions has been applied to ϕlaplacian problems with Mixed boundary...
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Báo cáo hóa học: " Research Article An Adaptively Accelerated Bayesian Deblurring Method with Entropy Prior" docx
... simple and efficient method which overcomes difficulties in previously proposed methods In order to cope with the problems of earlier accelerated methods, the proposed AAMAPE method requires minimum ... [36] Hence, our proposed AAMAPE method with WWF yields higher SNR in comparison to the state-of-the-art methods ForWaRD and RI Moreover, we performed experiments with many images of different types ... iteration In most of these acceleration methods, the correction term is obtained by multiplying gradient of objective function with acceleration parameter Acceleration methods given in [17–19] use the...
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Báo cáo hóa học: " Research Article Hybrid Steepest Descent Method with Variable Parameters for General Variational Inequalities Yanrong Yu and Rudong Chen" pptx
... analyze a hybrid steepest descent method with variable parameters for solving general variational inequalities It is shown that the convergence of the proposed method can be proved under some mild ... steepest-descent methods with variable parameters for variational inequalities,” Journal of Optimization Theory and Applications, vol 132, no 1, pp 51–69, 2007 [16] Y Song and R Chen, “An approximation method ... problem is how to apply hybrid steepest descent method to solving GVI(F,g,C) For this purpose, Zeng et al [13] introduced a hybrid steepest descent method for solving the GVI(F,g,C) as follows Y...
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Báo cáo toán học: "Zero Capacity Region of Multidimensional Run Length Constraints" ppt
... integers d and k satisfying ≤ d ≤ k, a binary sequence is said to satisfy a one-dimensional (d, k) run length constraint if there are never more than k zeros in a row, and if between any two ones there ... · · · × mn n-dimensional binary rectangular patterns that satisfy the one-dimensional (d, k) run length constraint in the direction of every coordinate axis It is proven for all n ≥ 2, (n) d ... journal of combinatorics (1999), #R33 Introduction A binary sequence is (d, k)-constrained (or “runlength constrained”) if there are at most k consecutive zeros and between every two ones there...
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Báo cáo vật lý: "Characterization of Fe-Cr-Al2O3 Composites Fabricated by Powder Metallurgy Method with Varying Weight " ppsx
... ability to produce composites with high volume fraction, high productivity and possibility to fabricate components with complex geometry Iron matrix composites reinforced with alumina particles are ... reinforced with alumina particles and to characterize the properties of the composites The parameters studied were based on varying weight percentage of alumina particles MATERIALS AND EXPERIMENTAL METHODS ... composites reinforced with 20 wt % alumina produced the highest micro-Vickers hardness value The reinforcement resulted in higher micro-Vickers hardness reading compared to the composite without reinforcement...
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báo cáo khoa học: " Genetic transformation of cotton with a harpin-encoding gene hpaXoo confers an enhanced defense response against different pathogens through a priming mechanism" potx
... inoculated with a conidial suspension of V dahliae (1-3 × 107/ml) according to the method described above Leaves were collected 10 days after the inoculation and stained with Trypan blue using the method ... quantitative PCR and the 2-CT method Methods 2001, 25:402-408 doi: 10.1186/1471-2229-10-67 Cite this article as: Miao et al., Genetic transformation of cotton with a harpin -encoding gene hpaXoo confers ... the root inoculation with V dahliae conidia suspension in the green house and then stained with Trypan blue, which selectively stained dead or dying cells Leaves inoculated with sterile water were...
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The boundary element method with programming for engineers and scientists - phần 1 pps
... book will be familiar with the finite element method In the most common version of this method we subdivide the domain into elements and approximate The Boundary Element Method with Programming the ... three-dimensional space Thus, in this chapter, we consider discretisation methods used 32 The Boundary Element Method with Programming in the boundary method and start building the library of subroutines needed ... Finite Element Method, a significantly smaller group of people are working in this field the development of the method is lagging considerably behind The often quoted comparison that the method is...
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The boundary element method with programming for engineers and scientists - phần 2 pptx
... element method we also need the solutions for the boundary stresses (tractions) acting on a surface with an outward normal direction of n (see figure 4.10) 88 The Boundary Element Method with Programming ... coordinate systems a) 2-D and b) 3-D y 54 The Boundary Element Method with Programming 3.9 DIFFERENTIAL GEOMETRY In the boundary element method it will be necessary to work out the direction normal ... Element Method with Programming V3 V (3.53) V that is x y z y z y y z x z x z V3 x z x y x y (3.54) As indicated previously the unit normal vector v3 is obtained by first computing the length...
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The boundary element method with programming for engineers and scientists - phần 3 doc
... Q u( b ) Q (5.7) 98 The Boundary Element Method with Programming We now solve the boundary value problem (b) by the Trefftz method To apply the Trefftz method, we quite arbitrarily select N points ... results can be obtained with 24 elements 5.4 DIRECT METHOD As we have seen from the simple example, the Trefftz method is not suitable for general purpose programming The method is not very user-friendly ... than Trefftz’s method and has the advantage that convergence can be guaranteed We explain the direct method with an example in elasticity, as engineers associate the Betti theorem with that type...
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The boundary element method with programming for engineers and scientists - phần 4 pot
... may be evaluated with Gauss-Laguerre: e U ni Nn M Nn m 1 J ln k m k J m d d d Wm d d (6.39) 146 The Boundary Element Method with Programming whereas the second part is integrated with normal Gauss ... Kernels for potential problems) for a straight line element with linear shape function located parallel to the x-axis of length for n=1, with two different locations of Pi (shown in Figure 6.19): ... element for values of R/L= 0.5, 0.1 , 0.05 Compare with the analytical solution using MATHEMATICA or similar 168 The Boundary Element Method with Programming y z Pi R 2 Pi x Figure 6.20 3-D problem...
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