Object Detection Based on CCD Resolution

When you are working in digital photography, one of the things you need to understand is how to work with your camera's CCD resolution. There are many different aspects of digital cameras that can make a world of difference in the quality of photos that you take. In order to understand the way your camera's CCD (or CMOS) relates to the object detection, you will first need to understand how a digital camera works.

Digital Camera

Digital cameras are a massive technological step beyond their predecessors, traditional cameras. Old cameras relied on chemicals and physical parts to capture an image on a photo. Digital cameras are completely electronic and do not use any chemicals or produce any physical photographs. Although traditional film still provides a slightly better quality photo overall, the ease and advantages of digital cameras have become much more common and popular. The digital camera works by converting what is seen through the lens into digital pixels that can be processed in a computer.

Charge Coupled Device - CCD

The system that converts a shot into a digital image is an image sensor in most digital cameras known as CCD. A small percentage of digital cameras use complementary metal oxide device (CMOS), but it does practically the same thing. Both types of sensors convert the light coming in through the lens into electrons. CCD is preferred by most because it offers a high quality low noise image. CMOS sensors are more susceptible to noise and have a lower light sensitivity, but use much less power than CCD sensors overall.

How CCD Sensors Work

Once you line up your shot with a digital camera, the first step is to adjust the zoom to get the image set up how you want it. When you press the shutter release half way, the camera auto focuses on your subject, measures the available light, and sets the shutter speed and aperture for the best shot. When you press the release all the way down, it will expose the CCD sensor to the light and build an electrical charge until the shutter closes. The ADC then interprets the digital signal into an image that you can typically view on the camera's LCD screen. This image is stored on the camera's memory device and can be transferred to any computer to store or edit afterwards.

Object Detection with CCD

When you take a picture, it can have multiple subjects that you are trying to capture. The CCD sensor is able to detect the positioning of multiple subjects in your shot. The image of your shot is divided into multiple sections. The CCD sensor will analyze the distance from the various objects in the shot and focus on the target subject automatically. It uses the distance measured from that object to determine the distances of everything surrounding it. Using this calculation, the sensor is able to adjust the clarity and focus of everything in the picture regardless of the distance from the camera.

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