What is the Difference Between a Plane Array Camera and a Linear Array Camara






To understand the difference between a planar array camera and a linear array camera, we must first understand what a planar array camera is and what a linear array camera is.




What is area array camera?

The area array camera realizes the pixel matrix shooting. In a camera image, the detail of the image is not determined by the number of pixels, but by the resolution. Resolution is determined by the focal length of the selected lens. The resolution of the same camera is different when different focal lenses are selected. How many pixels do not determine the resolution (sharpness) of the image, so what are the advantages of a large-pixel camera? There is only one answer: reduce the number of shots, improve the speed of testing.


The area array camera can be exposed in a short time, and the dynamic object can be imaged in a short time, so the effect is static. So comparative use is used in some industries where objects are running at high speed.



What is a linear array camera?

Linear Array Camera: As the name implies, it is "linear". Although it is also a two-dimensional image, it is very long. A few K in length, but only a few pixels in width.  Generally, this camera is used only in two cases:


First, the measured field of vision is long and slender ribbon, which is mostly used to detect the problem on the drum.


Secondly, it needs great vision or high precision. In the second case (requiring a great field of vision or high accuracy), it is necessary to use an excitation device to excite the camera many times, take many pictures, and then merge the multiple "strip" images into a huge picture.


Therefore, the acquisition card which can support linear array camera must be used for linear array camera. Linear array cameras are expensive, and their detection speed is slow in the case of large field of vision or high precision detection. Generally, the image of a camera is? 400K-1M, while the merged image has several M's, so the speed is slow naturally. Slow work makes fine work. For these two reasons, linear array cameras are only used in very special situations.


The area array camera can be exposed in a short time, and the dynamic object can be imaged in a short time, so the effect is static. So comparative use is used in some industries where objects are running at high speed.


The Difference between Linear Array Camera and Area Array Camera.




Differences in application:

Area array camera: It has a wide range of applications, such as area, shape, size, position, and even temperature measurement.

Linear array camera: It is mainly used in image processing in the fields of industry, medical treatment, scientific research and security. Typical applications are the detection of continuous materials such as metals, plastics, paper and fibers.


The detected object usually moves at a uniform speed? It is scanned successively by one or more cameras to achieve uniform detection of its entire surface. The image can be processed one line at a time, or the array image composed of multiple lines can be processed. In addition, linear array camera is very suitable for measuring occasions, thanks to the high resolution of the sensor, which can accurately measure microns.





Area array camera: It can acquire two-dimensional image information and measure image intuitively.

Linear array camera: One-dimensional pixel number can be done a lot, but the total image element is less than the area array camera, and the pixel size is more flexible, the number of frames is high, especially suitable for the measurement of one-dimensional dynamic targets. Moreover, the linear array has high resolution and low cost, which can meet the requirements of most measurement sites.


Above is today's difference between linear array camera and area array camera. I hope you can get some results after seeing it.







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