Instruction/ maintenance manual of the product AD-081 JAI
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T ech Note TN-0902 Date: 02/06/09 USING A 2CCD CAMERA T O CREA TE HIGH-DYNAMIC RANGE IMAGES Some imaging scenarios push dynamic range beyond the capabilities of the typical sensor . This is especially true where incident light is present (e.g., imaging a light source and the surrounding area).
T ech Note 2 NO. TN-0902 pg 2 Example 1 - Maximum Dynamic Range (no overlap) T o create an image that spans the maximum range of light intensities, use shutter settings to calibrate the 2 sensors so that Sensor B = Sensor A * 1024.
T ech Note 2 Displaying a high dynamic range image on a standard monitor will require mapping the output to t the monitor’ s dynamic range capability .
T ech Note 2 Now , our post processing routine could be handled as follows: if (pixel B < 16){ pixel_out = pixel A }else{ pixel_out = pixel B * 64 } By overlapping the two sensor responses, this ap.
T ech Note 2 Now as Sensor A approaches its saturation point (512 – 1023 counts) the output uses the average of both sen - sors’ data to “smooth” the transition between the two sensor response graphs (see Figure 6).
T ech Note 2 For example, in a 4-bit overlap scenario, we still set the shutter for Sensor B to be roughly 64 times faster than Sensor A (i.e., a pixel on Sensor A with a value of 256 would have a value of 4 on Sensor B).
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If you already are a holder of JAI AD-081, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime JAI AD-081.
However, one of the most important roles played by the user manual is to help in solving problems with JAI AD-081. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device JAI AD-081 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
