An imaging system (100, 200, 300, 400, 500, 600, 700, 800, 900, 1000, 1100, 1200, 1300, 3000), comprising a camera module, comprising a filter module (112, 1400, 1800, 3320) and a sensor module (115, 3330), wherein the filter module (112, 1400, 1800) is configured to output target optical signals of different bands in optical signals incident on the filter module (112, 1400, 1600, 1800, 1900, 2000, 2200, 2400, 2500, 2600, 3320) to a same pixel on the sensor module (115, 3330) at different times; and the sensor module (115, 3330) is configured to: convert the target optical signals incident on the sensor module (115, 3330) into electrical signals, and output the electrical signals; wherein the filter module comprises a movement module and a plurality of filters; each filter is configured to output a target optical signal in optical signals incident on the filter, and bands of target optical signals output by different filters in the plurality of filters are different; and the movement module is configured to move, at different times, different filters in the plurality of filters to target positions at which optical signals can be received; characterized in that the imagining system further comprises a processing module (120, 3420) configured to perform color tuning processing on the plurality of groups of raw image data to obtain a color image, wherein different groups of raw image data in the plurality of groups of raw image data correspond to target optical signals of different bands, and the processing module is specifically configured to perform white balance, color restoration, gamma correction, and three-dimensional look-up table processing on the plurality of groups of raw image data, and characterized in that the filter module further comprises an infrared cut-off filter, and the infrared cut-off filter is configured to filter out infrared light in the target optical signal before the target optical signal is incident on the sensor module (115, 3330). the filter module (112, 1400, 1800) is configured to output target optical signals of different bands in optical signals incident on the filter module (112, 1400, 1600, 1800, 1900, 2000, 2200, 2400, 2500, 2600, 3320) to a same pixel on the sensor module (115, 3330) at different times; and the sensor module (115, 3330) is configured to: convert the target optical signals incident on the sensor module (115, 3330) into electrical signals, and output the electrical signals; wherein the filter module comprises a movement module and a plurality of filters; each filter is configured to output a target optical signal in optical signals incident on the filter, and bands of target optical signals output by different filters in the plurality of filters are different; and the movement module is configured to move, at different times, different filters in the plurality of filters to target positions at which optical signals can be received; characterized in that the imagining system further comprises a processing module (120, 3420) configured to perform color tuning processing on the plurality of groups of raw image data to obtain a color image, wherein different groups of raw image data in the plurality of groups of raw image data correspond to target optical signals of different bands, and the processing module is specifically configured to perform white balance, color restoration, gamma correction, and three-dimensional look-up table processing on the plurality of groups of raw image data, and characterized in that the filter module further comprises an infrared cut-off filter, and the infrared cut-off filter is configured to filter out infrared light in the target optical signal before the target optical signal is incident on the sensor module (115, 3330).