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real-time image capturing system for car plate recognition

real-time image capturing system for car plate recognition

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49<strong>recognition</strong> process. In order to improve the <strong>system</strong>, there are few recommendationsare suggested so that the <strong>system</strong> can capture a clear <strong>car</strong> <strong>plate</strong> <strong>image</strong> when a vehicle isappear and approaching to the camera lens.First and <strong>for</strong>emost, a hardware triggering device such as sensor can be addedassociate with <strong>real</strong>-<strong>time</strong> video streaming from Basler IP camera. When there isvehicle approaching to the camera lens, a weight sensor can be used to activate thedeveloped application to start the <strong>real</strong>-<strong>time</strong> <strong>image</strong> <strong>capturing</strong> process. As the result,the <strong>system</strong> will only start to capture license <strong>plate</strong> when a vehicle is approaching untilspecific distance from camera lens. So only the <strong>image</strong>s that consist of license <strong>plate</strong><strong>image</strong> will be saved during <strong>real</strong>-<strong>time</strong> <strong>image</strong> <strong>capturing</strong>. The <strong>system</strong> will terminate the<strong>image</strong> <strong>capturing</strong> process automatically when there is no vehicle detected by theweight sensor.Besides using the hardware sensor, it can also detect the existence of vehicleby modify C++ source code of the developed application. Detection of frame pixelchanging technique can be added into the source code to enhance the <strong>system</strong> in termof <strong>image</strong> <strong>capturing</strong> process. For example, when vehicles are appeared in the video,pixel of the frame will be changed and different with default pixel value of thebackground location. This changing will activate the <strong>image</strong> <strong>capturing</strong> process so thatthe <strong>system</strong> will start <strong>image</strong> <strong>capturing</strong> process when vehicles appear in the videoframe. Hence only clear <strong>image</strong>s that consist of license <strong>plate</strong> will be captured by the<strong>system</strong> at the targeted location.By applying the recommendations mentioned above, data redundancyproblem can be resolved easily and then improve efficiency of <strong>real</strong>-<strong>time</strong> <strong>image</strong><strong>capturing</strong> <strong>system</strong> <strong>for</strong> <strong>car</strong> <strong>plate</strong> <strong>recognition</strong> in the future project development.

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