The correct output would be a logical condition that incorporates all the required comparisons between all index expressions present in the postcondition and the array position assigned to. For the above example one would have wprec(u[i]:=10,u[j]>100)=(i==j→10>100)&&(i!=j→u[j]>...
In our example, we used an up-sampling rate of two in both the horizontal and the vertical direction. Noth- ing prevents an implementation where other up-sam- pling ratios are used, such as four or even more. Usually this factor is used to identify the type of OGSS. Thus, Game ...
It is shown that a correct use of the Wigner distribution (WD) for time-frequency signal analysis requires use of the analytic signal. This version, often ... B Boashash - 《IEEE》 被引量: 6发表: 1985年 Anti-aliasing method based on rotated spatial filtering Due to the evolution of gra...
inordertoensurea correctsampling,acontinuoustimesignalmustbeupper-boundedinthe frequencydomain,andrelatesthesamplingratetothemaximumallowable frequency. Itmayhappenthatthemaximumsamplingrateofagivenstructureisnot highenoughtosatisfythesamplingtheoremforthedesiredmeasurement application,andtheincrementofthesamplingrateis...
Theoretically, to correct the defect ofExponentialColor mapping algorithm, namely the colorlessness of an image, and to approach saturation of theLinear multiplyColor mapping algorithm, theHSV exponentialalgorithmwas designed. However, in practice, it remains just as uncomfortable as theExponentialorLinear...
We then attempt to correct the under-representation by assuming that the missing color information is best represented by sampling the values below (left) or above (right) of the traced line and blending the color value of each pixel on a line with it, with the ratio corresponding to the ...
or, for a given sampling frequency, the fall-off rate must be (10.2.6)R = A/log2(fs2f1) . If the attenuation provided by the control system is 30 dB, for example, and the antialiasing filter has a fall-off rate of 24 dB/octave, then the sample rate must be greater then...
For example, the sampling frequency of my original signal is 25600Hz, and my order tracking only wants to count to the 128th order. In a certain frame, the speed range is 780-820rpm. If I calculate it directly without doing any processing on the signal, there ...
Figure 1. Wagon wheel example. Both can be viewed as the correct direction, depending on how you 'see' the wheel, but we now have an aliased signal. That is, there is a frequency component in our system that is unwanted and we cannot distinguish it from the real value. Both the forwa...
(generally rectangular) of the image consists in transforming the area into a parallelogram. The accuracy to which filtering is controlled by the computed values lh and lv depends upon the extent to which that assumption is correct. It is possible that some mapping functions will result in some...