1. A method of capacitive sensing, comprising: obtaining, from a plurality of sensor electrodes, a first capacitive image of a sensing region, wherein the first capacitive image describes changes in variable capacitance among the plurality of sensor electrodes; identifying an object signal value within the first capacitive image, wherein the object signal value is identified from a first object response that is produced by an input object that is proximate to the plurality of sensor electrodes; determining, using the object signal value of the first object response, an artifact threshold that identifies a first artifact response within the first capacitive image; and excluding, using the artifact threshold, artifact information regarding the first artifact response from a first report to a computing system.