In-vehicle image recognizer

An in-vehicle image recognizer, comprising:

• an imaging unit which is disposed in a vehicle to observe a surrounding area of the vehicle through a lens, and convert a light signal of the observed surrounding area of the vehicle into an image signal;
• an image recognition application execution unit having predetermined detection sensitivity to detect a moving object existing in the surrounding area of the vehicle from the image obtained by the imaging unit;
• a white turbidity level calculator which calculates a white turbidity level of the lens from the image signal;
• an attachment level calculator which calculates an attachment level of attached matter such as dirt or water drops to the lens;
• and
• a detection sensitivity adjustor which adjusts the detection sensitivity to be increased according to the white turbidity level, wherein
• the detection sensitivity adjustor corrects the detection sensitivity based on the attachment level of the attached matter such as the dirt or the water drops to the lens.