| 摘要 |
<p>Disclosed herein is an image compression apparatus and method for a mobile communication terminal. The image compression apparatus includes an image sensor unit, an Image Signal Processor (ISP), an auto focus Digital Signal Processor (DSP), and a compression module. The image sensor unit converts an optical signal into an electrical signal. The ISP unit receives the electrical signal from the image sensor unit and outputs digitized image data. The auto focus DSP receives the image data from the ISP, extracts edge components from the image data, calculates a focus value by integrating the edge component values of a window set region, and calculates a maximal focus value while driving the focus lens of a lens unit. The compression module receives the maximal focus value from the auto focus DSP, and performs image compression while quantizing the image data, which are input from the ISP unit, using a quantization parameter determined according to the received maximal focus value.</p> |
