diff --git a/vision/SensorProcessor.h b/vision/SensorProcessor.h
new file mode 100644
index 0000000..b5ad65c
--- /dev/null
+++ b/vision/SensorProcessor.h
@@ -0,0 +1,28 @@
+
+#ifndef _SENSOR_PROCESSOR_H_
+#define _SENSOR_PROCESSOR_H_
+
+// struct maps a single point x to to a value f of x
+typedef struct {
+	double x;
+	double fx;
+} Interpolation;
+
+// a set of mapping to use to determine distance
+// in inches given a pixel offset
+const Interpolation pixel_to_dist[4] = {
+	{43.0, 495.0},
+	{98.0, 260.0},
+	{145.75, 174.0},
+	{216.75, 110.0}};
+const Interpolation pixel_to_dist640x480[4] = {
+	{86.0, 495.0},
+	{196.0, 260.0},
+	{291.5, 176.0},
+	{433.5, 110.0}};
+
+double interpolate(int num_interp_vals,
+		const Interpolation *interp, double value);
+
+#endif //_SENSOR_PROCESSOR_H_
+