Image sensing system

An image sensing system comprising:

• an image sensor including a plurality of unit pixels, each unit pixel configured to convert an optical signal of an object into a pixel signal and including a color filter to allow incident light having a specific color to pass through for generating the optical signal, the image sensor configured to generate raw image data indicative an image of the object from pixel signals output from the plurality of unit pixels;
• a sensing controller communicatively coupled to the image sensor and configured to control, based on a sensing parameter, a sensing condition of the image sensor for each set of the unit pixels that includes one or more unit pixels corresponding to a same color;
• a parameter addition circuit communicatively coupled to the image sensor and configured to obtain a parameter added data by adding the sensing parameter and the raw image data output from the image sensor;
• and
• a sensing parameter calculator communicatively coupled to the sensing controller and the parameter addition circuit and configured to calculate a distribution of pixel values for each set of the unit pixels based on the parameter added data received from the parameter addition circuit, calculate an updated sensing parameter based on the distribution of pixel values, and transmit the updated sensing parameter to the sensing controller and the parameter addition circuit.