A heavy-duty scraping and rake attachment for excavator buckets for clearing brush-covered earth. Neighborhood statistics for a given pixel from the image data are computed based on values of neighbor pixels of the given pixel from the image data. An actuator is adapted to move the plurality of stacked cell structures inside of the housing while substrates in the stacked cell structures are being heated. Via the winding operation of the roller shaft thereof, the blind body can be flexibly adjusted to have it both ways with partial light and partial black-out effect, or to display in a complete black-out status for light control and privacy purpose to achieve best using condition and versatile changes of the present invention.