Anti-aliasing filter for use in digital video applications. Implements a 3x3 low-pass filter on the image pixels to remove high frequency artefacts such as jagged edges, stepped lines and Moiré interference patterns. Ideal for use with image sensors and before video downscaling to vastly improve ...
Some people will apply excellent instrument-grade electronic filters in a classical anti-aliasing filter scheme, and think this gives them the best possible measurement accuracy. Actually, when you take into account the known damage that a theoretically perfect filter would cause, disregarding the prac...
An antialiasing digital filter for video coders, meeting the CCIR Rec. 601 requirements for A/D (analog-to-digital) interfaces, is described. The input signal is oversampled at a frequency that is four times the nominal one; this cuts the complexity of the analog front end filter down to...
The present invention discloses a switched capacitor digital mixer and anti-aliasing filter circuit which uses switched capacitor current / voltage is sampled by charge-sharing digital filter function, through a number of bits of the high and low flat dynamically adjust filter parameters, you can ...
1. 2.5 inch diameter round filters mounted in Series 8 (67mm) threaded filter rings for $130. In many cases, although the filter diameter may be smaller than the outside diameter of the lens barrel, there is no problem with vignetting, since the opening of the lens is so much smaller ...
网络数码边缘圆滑软件;数码边缘圆滑软体 网络释义
Customers are facing precision issues when using SAR ADC or Sigma-delta ADC and considering overall system AC accuracy mainly because of the imperfections of the analog Anti-Aliasing filter. This arti
Using the modules in Hardware-Timed Single Point Sample Mode (HWTSP) allows you to bypass the sharp anti-aliasing digital filters and requires the IIR elliptic filter to be used. However, you then cannot disable the IIR filter anymore.Related...
and via control logic providing oversampled output of the converter to determine likely digital values corresponding to the output, and wherein the control logic substantially eliminates aliasing resulting from waveform transients in input to the converter, and wherein no anti-aliasing filter is employe...
As with any FFT-based IF architecture, the anti-alias filter is required to prevent aliasing (the folding ofout-of-bandsignals into the ADC sampled data). This filter has many poles and thus has substantial group delay. Even a very fast-rising RF burst, downconverted to the IF frequency,...