Abstract: A processing system configured for capacitive sensing includes sensor circuitry with functionality to acquire an absolute capacitive profile for sensor electrodes, and acquire a transcapacitive image using the sensor electrodes. The processing system is configured to create a first estimate of common mode noise using the absolute capacitive profile and the transcapacitive image, determine a location lacking an input object in the transcapacitive image using the first estimate of common mode noise, create a second estimate of common mode noise based on the location and the transcapacitive image, determine positional information of the input object using the second estimate of common mode noise, and process the positional information.

Abstract: Methods, systems and devices are described for determining positional information for objects using an input device. The various embodiments provide improved user interface functionality by facilitating user input with input objects that are at the surface and objects that are away from the surface. The input device includes a processing system and an array of sensor electrodes adapted to capacitively sense objects in a sensing region. The processing system is configured to determine first positional information for an input object in a first portion of the sensing region based on a difference between a first frame of the first plurality of frames and a filtered frame even when the input object is determined to be in the sensing region when the first plurality of frames are acquired, wherein the filtered frame is based on one or more of the first plurality of frames.

Abstract: Methods, systems and devices are described for determining positional information for objects using an input device. The various embodiments provide improved user interface functionality by facilitating user input with input objects that are at the surface and objects that are away from the surface. The input device includes a processing system and an array of sensor electrodes adapted to capacitively sense objects in a sensing region.