Abstract: Disclosed herein method and apparatus for detecting changes between heterogeneous image data for identifying disaster damage. The method includes obtaining observation image data of an event occurrence region and reference image data that occurs before an event and has a heterogeneous type of an image from the observation image data; processing the observation image data and the reference image data according to an attribute of the observation image data and preprocessing the observation image data and the reference image data to determine whether or not there is an exceptional object to be excluded from a change analysis in the processed observation image data and the processed reference image data based on an event type and to process the exceptional object; and detecting a change area of the event occurrence region based on the preprocessed observation image data and the preprocessed reference image data.

Abstract: An internal reference voltage generation device may include a cell array including a plurality of cells which provide reference voltages of different levels. Each of the plurality of cells may include one of a plurality of divider resistors included in a resistor string; a transmission gate configured to output a voltage of a divider node which is connected to the one divider resistor, in response to a select signal; and a unit decoder configured to provide the select signal to the transmission gate.

Abstract: A polarizing plate and an optical display including the same are provided. A polarizing plate includes: a polarizer; and a first protective layer and a second protective layer sequentially stacked on a surface of the polarizer, and the second protective layer includes a positive C retardation layer, the positive C retardation layer having a thickness of about 10 ?m or less, an index of refraction of about 1.50 to about 1.55, and a glass transition temperature (Tg) of about 150° C. to about 250° C.

Abstract: The present invention relates to a device for opening and closing a toilet cover and a toilet seat and, more specifically, to a device for opening and closing a toilet cover and a toilet seat, enabling a user to open the toilet cover without touching the toilet cover.