Category: Education

Behind the Aperture – The Engineering Behind Mobile Phone Cameras

June 11th, 2012 Permalink

This is the last in our series of articles about the imaging world, I would encourage anyone that enjoyed them to comment below with any further topics and I can include it in future articles. In previous weeks, we have guided you through the process of producing a digital image and have explained some of […]

This is the last in our series of articles about the imaging world, I would encourage anyone that enjoyed them to comment below with any further topics and I can include it in future articles.

In previous weeks, we have guided you through the process of producing a digital image and have explained some of the interesting things that we can look forward to seeing in the future. We first talked about the human visual system and how it’s used for digital cameras to mimic the human eye. We then spoke about the mechanics of images sensors and the basic functions of an image signal processor.  Most of the aspects of imaging discussed up to now can be applied to any digital camera. So this week we complete our column with the challenges that face one of the fastest growing camera markets, the cell phone camera.
In the past five years, smartphones have exploded in popularity and the resolution and quality of their cameras have increased exponentially.  The original iPhone, released in 2007, contained a fixed focus, 2 MP sensor that was noisy and lacked decent image quality. Just five years later, the latest iPhone contains an 8 MP, auto-focus camera that rivals digital still cameras in terms of overall image quality and rendition. More Photos

Behind the Aperture – The Image Signal Processor – A image’s best friend

May 29th, 2012 Permalink

Here is the next segment of Angelo and my, Behind the Aperture Series where we discuss the inner workings of digitial cameras and some of the behind the scenes things that need to happen in order to produce a digital image. ———————————— Michael Seliske & Angelo Alaimo – 3B Computer & 4B Electrical Posted on: […]

Here is the next segment of Angelo and my, Behind the Aperture Series where we discuss the inner workings of digitial cameras and some of the behind the scenes things that need to happen in order to produce a digital image.

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Michael Seliske & Angelo Alaimo – 3B Computer & 4B Electrical
Posted on: February 15, 2012

Last issue, we talked about image sensors and the role they play in creating digital images.  This issue, we’ll be discussing the next block in the imaging system which immediately follows the image sensor and is arguably the most important part of the overall camera system. That very important part called the image signal processor (ISP). An ISP can be thought of as the brains of the imaging system in a camera as it’s in charge of controlling many of the individual parts of a camera that work together in order to produce a usable image.
Within this ISP, there are hundreds of embedded algorithms and features, but the main three that have the largest effect on image quality are known as the three A’s: auto focus (AF), auto exposure (AE), and auto white balance (AWB). More Photos

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