Wireless sensor networks（WSNs） have used widely.Cameras are installed in various areas to capture targeted objects.Because of computational limitations

it may not be able to analyze these images in the sensors but they must be transmitted to a centralized server hop by hop through the sensor network.To reduce the energy used

the size of the images shall be kept small

which may degrade image quality.The scenario that a number of camera-equipped sensors are taking pictures of the same object is studied

and the pictures of adjacent cameras may overlap.By allowing intermediate sensors to process the images and combine the overlapping portions

the total energy spent on transmission is reduced subject to any degradation in image quality.The compromising between image quality and energy consumption of different routing is very important onWSNs.