INHERENT SIGNAL PREPROCESSING IN THE LINE CCD SENSOR

Ludek Kejzlar,Jan Fischer

doi:10.47839/ijc.2.2.213

Abstract

This paper is devoted to the description and practical verification of a new line CCD sensor control method. This method is used for inherent signal preprocessing or processing in line CCD sensor. This new method is suitable for movement compensation, one-frame filtration or two-frame filtration. Because of the similarity between a Non- Recursive Digital Filter with Finite Impulse Response (NRDF FIR) and the new mode we named it FIR mode. Conclusions and hints applicable for operation of line CCD sensor in FIR mode are also included in this paper.

Highlights

INTRODUCTIONA FIR mode is one of the non-standard modes of a linear CCD sensor operation
A FIR mode is one of the non-standard modes of a linear CCD sensor operation. We use this mode for inherent signal preprocessing in line CCD sensor
The FIR mode of line CCD sensor operation is usable for inherent signal pre-processing in line CCD sensor

Summary

INTRODUCTION

A FIR mode is one of the non-standard modes of a linear CCD sensor operation. We use this mode for inherent signal preprocessing in line CCD sensor. This mode is based on multiple exposures. A value of each output pixel is determined from values of NF previous photo-elements, which means NF exposures are needed to obtain an image. Each exposure has its own integration time, which has effect similar to the coefficients of filter impulse response

THE FIR MODE

PRINCIPLE OF FIR MODE OF OPERATION

EXAMPLES OF FIR MODE APPLICATIONS

MOVEMENT COMPENSATION

ONE-FRAME FILTRATION

CONCLUSIONS