84. Interpolation adds samples in between, Decimation removes samples from within. The 0th percentile filter is minimum filter used for finding darkest points in an image. 30. Display. 10. The region reserved brightness not depend on its intensity but also on its background. This is why we … What Is Maximum Filter And Minimum Filter? It is basically a numerical paper but it also consists of some very important theory portions that are required to be studied well as beginners. The color of the flag will appear to shift in hue toward the red component cyan. Short term storage for use during processing. 16. Frequency domain Spatial domain: It refers to the image plane, itself and it is based on direct manipulation of pixels of an image. 4. Illumination is the amount of source light incident on the scene. What is simultaneous contrast? so causal systems are realizable. 1) x(n)*y(n)= y(n)*x(n) The histogram of a digital image with gray levels in the range [0, L-1] is a discrete function h (rk) = nk, where rk is the kth gray level and nk is the number of pixels in the image having gray level rk. In each eye, cones are in the range 6-7 million and rods are in the range 75-150 million. Causal, Non causal, time variant, time invariant, Linear, non linear, stable and unstable system. The hue of a perceived color depends on the adoption of the viewer. Subjective brightness means intensity as preserved by the human visual system.Brightness adaptation means the human visual system can operate only from scotopic to glare limit. Differentiate between a discrete time signal and a digital signal. 2. What is BIBO stability? Specify the elements of DIP system? When x, y and the amplitude values of f all are finite discrete quantities , we call the image digital image. What Are The Properties Of Haar Transform? Preprocessing Home » ECE VIVA Questions » 300+ TOP Digital Signal Processing LAB VIVA Questions and Answers. 36. List the hardware oriented color models? What is impulse response? Define Image? Define circular convolution. 4. 18. 4. 21. What is sectioned convolution? 2. ANSWER: (a) Digital signals. These objective type Digital Signal Processing questions are very important for campus placement test, semester exams, job interviews and competitive exams like GATE, IES, PSU, NET/SET/JRF, UPSC and diploma. Ex: any system with feedback is Recursive , without feedback is non recursive. a. 20. The two types of light receptors are. cross correlation is a measure of similarity between two signals as a function of time delay between them. Since mean square error of reconstructed image and original image is minimum and the mean value of transformed image is zero so that uncorrelated. 18. What Do You Mean By Point Processing? 13. Antennas. ~~ Signal Processing Questions And Answers ~~ Uploaded By Zane Grey, viva questions and answers on digital signal processing 1 differentiate between a discrete time signal and a digital signal a discrete time signal can be defined as a signal which is continuous in amplitude and discrete in time in other words a discrete time signal gives Reflectance is the amount of light reflected by the object in the scene. Its the sampling frequency which is equal to twice of Continuous time signal which has to be sampled. if not Non linear. 15. 13. 8.. eBook Signal Processing Questions And Answers Uploaded By Janet Dailey, viva questions and answers on digital signal processing 1 differentiate between a discrete time signal and a digital signal a discrete time signal can be defined as a signal which is continuous in amplitude and discrete in time in other words a discrete time signal Digital Signal Processing LAB VIVA Questions and Answers … Circular convolution is same as linear convolution but circular is for periodic signals. 24. Digital Signal Processing LAB VIVA Questions :-1. Question -5: Explain Interpolation and decimation and their applications in Digital Signal Processing. If any one of the given two sequences length is very high then we have to go for sectioned convolution. Representation and Description What is meant by illumination and reflectance? RGB model Storage What do you meant by Color model? These elements are referred to as pixels or image elements or picture elements or pixls elements. List the categories of digital storage? 9. Dear Readers, Welcome to Digital Signal Processing multiple choice questions and answers with explanation. Refer Interpolation and Decimation . 1. Specially developed for the Electronic Engineering freshers and … Causal and Non causal, Periodic and non periodic, even and odd, energy and power signals. What is region of convergence (ROC)? Write Down The Properties Of Haar Transform? Question5: Define Mach band effect? Photopic vision Scotopic vision If some set of samples repeats after a regular interval of time then its called as periodic. However they appear to the eye to become darker as the background becomes lighter. So it gives the overall picture of the image.This is also known as thin lightvision. Processing Slant transform has very good energy compaction for images. Copyright 2020 , Engineering Interview Questions.com, 300+ TOP Digital Signal Processing LAB VIVA Questions and Answers. Image enhancement is to process an image so that the output is more suitable for specific application. What is Hue and saturation? Define subjective brightness and brightness adaptation? 1) Over lap-Add method. * To get the file, download the Digital Signal Processing Interview Short Viva Questions Answers PDF. 9. 2. 6. YIQ model 4) Fourier transform of auto correlation gives energy spectral density. What Is The Effect Of Mach Band Pattern? 11. Define Digital image? ANSWER: (b) Digital to analog conversion. 42. 4. 16. The digital image is an array of real or complex numbers that is represented by a finite no of bits. 15. DIGITAL IMAGE PROCESSING VIVA Questions :-1. b) They … Define cross correlation and auto-correlation? Important Viva Questions for Digital Signal Processing Q1.- What do you mean by signal processing system? State sampling theorem. Several rods are connected to one nerve end. 8. Required fields are marked *. What Are The Properties Of Slant Transform? 1) R12(T)≠R21(T) CMY model Your email address will not be published. Most Asked Technical Basic CIVIL | Mechanical | CSE | EEE | ECE | IT | Chemical | Medical MBBS Jobs Online Quiz Tests for Freshers Experienced. The median filter replaces the value of a pixel by the median of the gray levels in the neighborhood of that pixel. Tags. JNTU KHA Syllabus Digital Signal Processing DSP Material Unit wise Short Questions and Answers Hand Written Lecture PPT Notes Textbooks PDF Download All centre square have same intensity. Question:Explain 8085 Microprocessor Architecture. Differentiate photopic and scotopic vision ? 50. 3. 38.Obtain The Hadamard Transformation For N = 4? Resolution is defined as the smallest number of discernible detail in an image.Spatial resolution is the smallest discernible detail in an image and gray level resolution refers to the smallest discernible change is gray level. Explain briefly, the various methods of representing discrete time signal circular convolution with the length of linear convolution length (l+m-1) results linear convolution. Ans. Two objects with different surroundings would have identical luminance but different brightness. Refer Interpolation and Decimation . Question -5: Explain Interpolation and decimation and their applications in Digital Signal Processing. 1. 3) [x(n)*y(n)]*z(n) =x(n)*[y(n)*z(n)]. What are the properties of correlation? 2. What are the steps involved in DIP? 1. 3. Digital Signal Processing (DSP) Viva Questions and Answers 1. 250+ Digital Image Processing Interview Questions and Answers, Question1: Define Image? What is the importance of linear and circular convolution in signals and systems? What is Dynamic Range? 26. 1) Programmable operations 2) Flexibility in the system design 3) Cheaper systems 11. 1. What is linear and nonlinear systems? Answer -5: Interpolation increases data rate, decimation decreases data rate. 22. 2) Over lap save method. Answer -8: The functions such as rand and randn used to model AWGN channel. Explain its significance. List the applications of color models? 24. These filters are called averaging filters. Question2: Define discrete time system? Define discrete time and digital signal. 5. If a system’s response is Bounded for Bounded excitation then its BIBO stable. 2. 2) R12(T)=R21*(-T) 3. Write the expression for discrete convolution. It states that , To reconstruct the continuous time signal from its Discrete time signal, The sampling frequency should be more than twice of continuous time signal frequency. Get free access to PDF Ebook Digital Signal Processing Multiple Choice Questions Answers for free. 250+ Digital Signal Processing Interview Questions and Answers, Question1: Define discrete time signal? RGB model— used for color monitors & color video camera Copyright 2020 , Engineering Interview Questions.com. A digital image is composed of a finite number of elements each of which has a particular location or value. If a system’s excitation and responses are both discrete time signals then its called as discrete time system. Ans1. YIQ model—used for color picture transmission. If a system satisfies homogeneity principle and superposition principle then it is Linear. Required fields are marked *. 4. It is also known as principal component transform. 3. KL Transform is an optimal in the sense that it minimizes the mean square error between the vectors X and their approximations X^. The range of values spanned by the gray scale is called dynamic range of an image. 3) Telegraph signals are examples of. 14. What is Dynamic Range? Converting a continuous time signal into discrete time signal is called as Sampling, Aliasing is an effect that causes different signals to become indistinguishable. Digital signals b. Analog signals c. Impulse signals d. Pulse train. give examples? Recognition means is a process that assigns a label to an object based on the information provided by its descriptors.Interpretation means assigning meaning to a recognized object. 20. Question -8: If one is appearing for Digital Signal Processing (DSP) position, he may often be asked "what is the difference between rand and randn" ? This is also known as bright light vision. Home » ECE VIVA Questions » 300+ TOP DIGITAL IMAGE PROCESSING VIVA Questions and Answers. If a system’s operation is independent of time then its time invariant, i.e delayed system response is equal to system’s response for delayed input. The human being can resolve the fine details with these cones because each one is connected to its own nerve end. HSI model. Define sampling and aliasing. Convolution is used to calculate a LTI system’s response for given excitation. Part-II : Z Transforms. 31. What is discrete time system? 17. 2. An image may be defined as two dimensional light intensity function f(x, y) where x and y denote spatial co-ordinate and the amplitude or value of f at any point (x, y) is called intensity or gray scale or brightness of the image at that point. Question4: State the classification of discrete time signals? What is meant by mach band effect? (adsbygoogle = window.adsbygoogle || []).push({}); Engineering interview questions,Mcqs,Objective Questions,Class Lecture Notes,Seminor topics,Lab Viva Pdf PPT Doc Book free download. Hue is a color attribute that describes a pure color where saturation gives a measure of the degree to which a pure color is diluted by white light. 5. 1. 12. classifying discrete time systems. 2) [x(n)+y(n)]*z(n)=x(n)*z(n)+y(n)*z(n) Mach band effect means the intensity of the stripes is constant. 1. 23. Define time invariant system. The 100th percentile is maximum filter is used in finding brightest points in an image. Top 50 Digital Signal Processing ece technical interview questions and answers tutorial for fresher digital signal processing interview questions answers pdf 6. Your email address will not be published. Express the discrete time signal x(n) as a summation of impulses.7. It accomplishes this large variation by changes in its overall intensity. Question5: Define periodic and aperiodic signal? ^ Book Signal Processing Questions And Answers ^ Uploaded By Denise Robins, viva questions and answers on digital signal processing 1 differentiate between a discrete time signal and a digital signal a discrete time signal can be defined as a signal which is continuous in amplitude and discrete in time in other words a discrete time signal 3. Your email address will not be published. 41. What do you mean by aliasing in digital signal processing? 1. Most Asked Technical Basic CIVIL | Mechanical | CSE | EEE | ECE | IT | Chemical | Medical MBBS Jobs Online Quiz Tests for Freshers Experienced. 3. Define Brightness? How will you classify the discrete time signals? Answer -5: Interpolation increases data rate, decimation decreases data rate. causality states that system’s response should depend on present and past inputs only not on the future inputs. Image enhancement at any Point in an image depends only on the gray level at that point is often referred to as Point processing. 5. 3. Why is it performed? How it can be avoided? a) They are used to introduce small delays. 3) if R12(T)=0, both signals are orthogonal to each other 2. Name The Categories Of Image Enhancement And Explain? 22. Therefore it preserves the brightness pattern near the boundaries, these bands are called as mach band effect. State the Initial value and final value theorem with regard to Z-transform. Define one-sided and two-sided Z-transform. (ie) Δi/i A Recursive system is one in which the output depend on it,s one or more past outputs while a non recursive is one in which output is independent of output. Archival storage for infrequent access. Write Down The Properties Of 2d Fourier Transform? Brightness of an object is the perceived luminance of the surround. Antennas and Wave Propagation Viva Short Questions and Answers PDF Rajeev Reddy Nareddula. What is Chromatic Adoption? Image Acquisition 26. Define Image? Image transmission and storage for business application, Useful in feature extraction,image coding and image analysis problem. For stable system the impulse response should be absolutely sum able . A Color model is a specification of 3D-coordinates system and a subspace within that system where each color is represented by a single point. Variation of signal strength occur on line of sight paths as a result of the atmospheric conditions and it is called .It can not be predicted properly. Published February 13, 2017. 2. Frequency domain techniques are based on modifying the Fourier transform of an image. What is Nyquist rate? The response of a system when the excitation is Impulse signal is called as impulse response. HIS model—-used for color image processing Gray level refers to a scalar measure of intensity that ranges from black to grays and finally to white. 25. What are recursive and non recursive systems? signal processing questions and answers Oct 04, 2020 Posted By Gérard de Villiers Media Publishing ... correct b 1 and 2 are correct c 1 2 and 4 are correct d all the four are correct viva questions and answers on digital signal processing 1 differentiate between a discrete time Define Resolutions? 19. Question4: What is Dynamic Range? If the ratio (Δi/i) is large , then large percentage of change in intensity is needed (ie) poor brightness adaptation. 10. Aliasing refers to … 37. A discrete time signal can be defined as a signal,... 2. How will you perform linear convolution via circular convolution? What is meant by pixel? What are the two methods of sectioned convolution? Questions & Answers on Discrete Fourier Transform – Properties and Applications The region of Z magnitude (|Z|) for which x (n).|Z|-n is absolutely summable. A Mask is a small two-dimensional array, in which the value of the mask coefficient determines the nature of the process, such as image sharpening. Home / lab viva questions / DSP Part-II& III. Define sampling and quantization? 3. Multiple Choice Questions Answers, Sociology Quizzes Questions And Answers, Texas Acrostic (PDF) Digital Signal Processing John G Proakis Solution. Graphical, Tabular, Sequence, Functional representation. 4. What are the types of light receptors? Question:Explain 8085 Microprocessor Architecture. The ratio of increment of illumination to background of illumination is called as web er ratio. it also called as Natural response, free forced response. Image will have high contrast, if the dynamic range is high and image will have dull washed out gray look if the dynamic range is low. 2. CMY model—used for color printing Ques 8 Tell some of applications of buffer? The negative of an image with gray levels in the range [0, L-1] is obtained by using the negative transformation, which is given by the expression. What is the condition to be satisfied for stability? Write the properties of linear convolution. When a discrete time signal is called periodic? What is the importance of causality? 1. It is represented as i(x, y). DSP is a very important subject for Engineering and Diploma students. Define discrete time and digital signal. The intensity or the brightness pattern perceive a darker stribe in region D and brighter stribe in region B.This effect is called Mach band pattern or effect. An image may be defined as two dimensional light intensity function f(x, y) where x and y denote spatial co-ordinate and the amplitude or value of f at any point (x, y) is called intensity or gray scale or brightness of the image at that point. Due to this idea of using the Eigenvectors corresponding to largest Eigen values. It cannot operate over the range simultaneously. Question3: What are the elementary discrete time signals? What do you meant by Gray level? A Signal processing system is one which is used to extract information from the signal which in turns depend on type of signal and nature of information it carries. Segmentation 14. For a function f (x, y), the gradient f at co-ordinate (x, y) is defined as the, _f = mag (_f) = {[(_f/_x) 2 +(_f/_y) 2 ]} ½. Spatial filtering is the process of moving the filter mask from point to point in an image. DSP stands for Digital Signal Processing. 12. (adsbygoogle = window.adsbygoogle || []).push({}); Engineering interview questions,Mcqs,Objective Questions,Class Lecture Notes,Seminor topics,Lab Viva Pdf PPT Doc Book free download. For linear spatial filter, the response is given by a sum of products of the filter coefficients, and the corresponding image pixels in the area spanned by the filter mask. It is represented by r(x, y). 4) As compared to the analog systems, the digital processing of signals allow. Hello, sir I want questions with answers in PDF format plz snd us, Your email address will not be published. 7. The output of a smoothing, linear spatial filter is the average of the pixels contain in the neighborhood of the filter mask. Interpolation adds samples in between, Decimation removes samples from within. 2. Haar transform has very poor energy compaction for images. Image Acquisition Auto correlation is a measure of similarity between signals and its delayed version as a function of time delay. Discrete time signal is continuous in amplitude and discrete in time, where Digital signal is discrete in time and amplitude. Download Free Digital Signal Processing Lab Viva Questions With Answers Digital Signal Processing Lab Viva Questions With Answers When people should go to the ebook stores, search introduction by shop, shelf by shelf, it is in reality problematic. How cones and rods are distributed in retina? The basic vectors of Slant matrix are not sequency ordered. If the ratio (Δi/i) is small, then small percentage of change in intensity is needed (ie) good brightness adaptation. 39. Electronics. Explain briefly, the various methods of representing discrete time signal Graphical, Tabular, Sequence, Functional representation. Sampling means digitizing the co-ordinate value (x, y).Quantization means digitizing the amplitude value. 19. Recognition and Interpretation. 23. Justify That Klt Is An Optimal Transform? Question3: Define Quantization ? The basic vectors of Haar matrix sequency ordered. How we can represent a discrete time signal? Discrete time signal is continuous in amplitude and discrete in time, where Digital signal is discrete in time and amplitude. 33. Online storage for relatively fast recall. For example,the American Flag will not immediately appear red, white, and blue of the viewer has been subjected to high intensity red light before viewing the flag. Question2: Define Image Sampling? 2. 1. What is recognition and Interpretation? 3.