A method of capacitive sensing that may include obtaining, from various sensor electrodes, a capacitive image of a sensing region. The capacitive image may describe changes in variable capacitance among the sensor electrodes. The method may further include identifying an object signal value within the capacitive image. The object signal value may be identified from an object response that is produced by an input object that is proximate to the sensor electrodes. The method may further include determining, using the object signal value of the object response, an artifact threshold that identifies an artifact response within the capacitive image. The method may further include excluding, using the artifact threshold, artifact information regarding the artifact response from a report to a computing system.