A sensor readout circuit, comprising: a readout element comprising an input; a first current source; a second current source; a voltage driver comprising an output; a first reference bolometer pixel comprising a first terminal and a second terminal, the first terminal electrically coupled to the first current source and the second terminal electrically coupled to the output of the voltage driver; a first active bolometer pixel comprising a first terminal and a second terminal, the first terminal electrically coupled to the second current source and the input of the readout element and the second terminal electrically coupled to the output of the voltage driver, wherein the first active bolometer pixel is configured for exposure to a sensor image; characterized by: a second reference bolometer pixel comprising a first terminal and a second terminal, the first terminal electrically coupled to the first current source and the second terminal electrically coupled to the voltage driver; a second active bolometer pixel comprising a first terminal and a second terminal, the first terminal electrically coupled to the second current source outputting the second current and the second terminal electrically coupled to the output of the voltage driver, and wherein the second active sensor is configured to change the current from the first terminal to the input of the readout element; a first switch configured to selectively electrically couple the first reference bolometer pixel to the first current source; a second switch configured to selectively electrically couple the first active bolometer pixel to the second current source; a third switch configured to selectively electrically couple the second reference bolometer pixel to the first current source; and a fourth switch configured to selectively electrically couple the second active bolometer pixel to the second current source. a readout element comprising an input; a first current source; a second current source; a voltage driver comprising an output; a first reference bolometer pixel comprising a first terminal and a second terminal, the first terminal electrically coupled to the first current source and the second terminal electrically coupled to the output of the voltage driver; a first active bolometer pixel comprising a first terminal and a second terminal, the first terminal electrically coupled to the second current source and the input of the readout element and the second terminal electrically coupled to the output of the voltage driver, wherein the first active bolometer pixel is configured for exposure to a sensor image; characterized by: a second reference bolometer pixel comprising a first terminal and a second terminal, the first terminal electrically coupled to the first current source and the second terminal electrically coupled to the voltage driver; a second active bolometer pixel comprising a first terminal and a second terminal, the first terminal electrically coupled to the second current source outputting the second current and the second terminal electrically coupled to the output of the voltage driver, and wherein the second active sensor is configured to change the current from the first terminal to the input of the readout element; a first switch configured to selectively electrically couple the first reference bolometer pixel to the first current source; a second switch configured to selectively electrically couple the first active bolometer pixel to the second current source; a third switch configured to selectively electrically couple the second reference bolometer pixel to the first current source; and a fourth switch configured to selectively electrically couple the second active bolometer pixel to the second current source. a second reference bolometer pixel comprising a first terminal and a second terminal, the first terminal electrically coupled to the first current source and the second terminal electrically coupled to the voltage driver; a second active bolometer pixel comprising a first terminal and a second terminal, the first terminal electrically coupled to the second current source outputting the second current and the second terminal electrically coupled to the output of the voltage driver, and wherein the second active sensor is configured to change the current from the first terminal to the input of the readout element; a first switch configured to selectively electrically couple the first reference bolometer pixel to the first current source; a second switch configured to selectively electrically couple the first active bolometer pixel to the second current source; a third switch configured to selectively electrically couple the second reference bolometer pixel to the first current source; and a fourth switch configured to selectively electrically couple the second active bolometer pixel to the second current source.