The invention provides a soft photosensitive
rapid convergence method for a low-power-consumption camera. The method comprises the following steps: S1, starting up a main processor; s2, initializing and operating a
coprocessor, and parallelly operating the starting of the
system in S3 and the convergence
processing of the
coprocessor in S5; s3, the main processor initializes the
system to start other necessary resources; s4, the main processor sends a stop command to the
coprocessor, and the step S6 is executed after the stop command is completed; s5, convergence
processing of the coprocessor: S5.1, the coprocessor starts to operate; s5.2, configuring a sensor, and using a fixed
exposure parameter; s5.3, initializing an ISP (
Internet Service Provider); s5.4, obtaining statistical information of a brightness
histogram; s5.5, looking up a table to configure Sensor parameters and sending the Sensor parameters to the main processor, and ending the coprocessor flow after receiving a stop command; s6,
synchronizing a stop state, and
synchronizing a table look-up result to the ISP; and S7, entering a normal process. Defects of the
photoresistor can be solved, dependence on the
photoresistor is avoided, and the first picture effect can be achieved without increasing hardware cost. The problem that a high-frame-rate small image depends on the Sensor can be solved, and common Sensors can use the method.