A New Focus Home Position Detection System for Digital Still Cameras

Automatic White Balance for Digital Still Cameras

In recent years digital cameras have captured the camera market. Although the factors that consumer consider is the quality of the photographs produced. White balance is one of the methods used to improve the quality of the photographs. The basic white balance methods are, however powerless to handle all possible situations in the captured scene. In order to improve the white balance we divide ...

Programmable DSP platform for digital still cameras

This paper presents a programmable DSP platform for Digital Still Cameras based on the Texas Instruments TMS320C54x family. One major advantage of this platform is that, after capturing an image from a CCD sensor, processing the raw image, and compressing the image for storage is performed on the Digital Signal Processor (DSP). This provides a short shotto-shot delay and a high degree of flexib...

System implications of implementing Auto-Focus on consumer digital cameras

In consumer digital cameras, some of the primary tasks in the image capture data path include automatic focus (AF), automatic exposure (AE) determination and autowhite balance. There are numerous algorithms used in implementing these tasks – auto-focus is implemented using maximum contrast, ranging or sonar; white balance using color gamut determinations and “gray value estimations”, and auto-e...

Image comparison measure for digital still color cameras

A measure is developed for comparing complex scenes produced by single-chip digital color cameras. The proposed measure is based on the CIELAB color space with appropriate considerations to the sensitivity of the Human Visual System (HVS) when viewing a complex scene. For comparison purposes, the error measures proposed have been implemented using the , and the recently recommended color differ...

IMAGE SENSORS and SIGNAL PROCESSING for DIGITAL STILL CAMERAS