Twenty-five years ago, the field of computational imaging arguably did not exist, at least not as a standalone arena of research activity and technical development. Of course, the idea of using computation to form images had been around for several decades, largely thanks to the development of medical imaging—such as magnetic resonance imaging (MRI) and X-ray tomography—in the 1970s and synthetic-aperture radar (SAR) even earlier. Yet, a quarter of a century ago, such technologies would have been considered to be a subfocus of the wider field of image processing. This view started to change, however, in the late 1990s with a series of innovations that established computational imaging as a scientific and technical pursuit in its own right.

中文翻译：

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计算成像的基础：信号处理的角度

二十五年前，计算成像领域可以说还不存在，至少不存在作为研究活动和技术开发的独立领域。当然，使用计算形成图像的想法已经存在了几十年，这很大程度上要归功于 20 世纪 70 年代磁共振成像 (MRI) 和 X 射线断层扫描等医学成像以及更早的合成孔径雷达 (SAR) 的发展。然而，四分之一个世纪前，此类技术还被认为是更广泛的图像处理领域的一个次要焦点。然而，这种观点在 20 世纪 90 年代末开始发生变化，一系列创新将计算成像确立为一种独立的科学和技术追求。