| 摘要 |
A system and method for collecting images of monitored devices, such as utility meters for electricity, gas and water, captures a digital image of a monitored device and produces a difference digital image from the digital image using a reference digital image of the monitored device. The difference digital image has pixel values derived from differences between corresponding pixel values of the digital image and the reference digital image. The difference digital image is smaller in data size than the original digital image. The original digital image can be reconstructed from the difference digital image using the reference digital image.
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