DOWN-SAMPLING DEVICE AND DOWN-SAMPLING METHOD, AND PROGRAM THEREOFPROBLEM TO BE SOLVED: To reduce throughput in a down-sampling frequency domain.FUKUI KATSUHIRO福井 勝宏SHIMAUCHI SUEHIRO島内 末廣HANEDA YOICHI羽田 陽一
Frequency Domain View of Downsampling • Multiplication by impulse sequence leads to replicas of input transform every 1/N Hz in frequency • Removal of zero samples (i.e., scaling of time axis) leads to scaling of frequency axis by factor N M.H. Perrott©2007 Downsampling, Upsampli...
Figure: Illustration of in the frequency domain. Using the common twiddle factor notation (12.1) the aliasing expression can be written as Example: Downsampling by 2 For , downsampling by 2 can be expressed as , so that (since ) Example: Upsampling by 2 For , upsampling (stretching...
Down sampling(time domain) Down sampling(frequency domain) Then,we do the up-sampling Up sampling(time domain) Up sampling(frequency domain) Analysis: compared with the original sample, up-sampling is better than down- sampling in representating the original information. The instance is attached ...
The most common form is a pooling layer withfiltersof size 2×2 applied with a stride of 2downsamplesat every depth slice in the input by 2 along both width and height, discarding 75% of the activations. WikiMatrix Original image Original image in spatial-frequency domain 2D low-passfiltered...
downsampling in the frequency domain, thus reducing the computational load and realising fast acquisition. The main difference between these three algorithms lies in the compression method: (1) XFAST [10] divides the locally sampled code intoablocks in the time domain, and each block is ...
A method and device to track navigational satellite signals, are claimed. In this invention, a combination of down-sampling and frequency domain transformation are used to track the
UHD images without the need for high-rate downsampling or dividing the images into several patches. Specifically, we ingeniously utilize the characteristics of the frequency domain to establish long-range dependencies of features. Taking into account the richer local patterns in UHD images, we also ...
In this paper, the algorithm of DCT domain downsampling in AVS is researched. 实验仿真表明,算法与时域线性内插降采样相比能够显著降低运算复杂度,视频效果也表现良好。 2. Generally,the implement of video format conversion is done through downsampling. 通常采用降采样完成实时视频格式调整。 更多例句>...
The high frequency information in an image is adaptively decreased to facilitate compression, which is then compensated through learning-based mapping. Specifically, an adaptive DCT-domain down-sampling method is presented to reduce the high frequencies in images and the visual pattern based learning ...