upsample


Also found in: Dictionary, Thesaurus, Medical, Financial.

upsample

(1) To make a digital audio signal higher quality by increasing the sample rate, for example, from 44.1 kHz to 88.2 kHz, and interjecting new samples in between existing samples. The sample size (word size) is also increased for finer granularity. The objective is to have a smoother digital wave going into the digital-to-analog converter (see DAC). Contrast with downsample. See sampling, oversampling and high-resolution audio.

(2) To increase the color depth of a digital image, for example, from 16 bits per pixel to 24 bits per pixel. See color depth, pixel and upscale.
References in periodicals archive ?
Furthermore, we upsample images in CIFAR-10 to the size of 299 * 299 and apply DBR-v3 network to it.
A possible solution is to introduce additional digital clipping after the upsample by 4.
Wu, "An MRF-based depth upsampling: upsample the depth map with Its own property," IEEE Signal Processing Letters, Vol.22, pp.1708-1712, 2015.
Coupled with this technique, for the upsample process, a box filter can be used, so the total processing time is kept to a minimum.
Secondly a robust method to upsample the image before laser line detection has been proposed, improving also the laser line detection results to sub-pixel accuracy, compared with the original image.