Abstract: This disclosure describes techniques for performing content adaptive histogram enhancement. In accordance with the content adaptive histogram enhancement techniques of this disclosure, a frame of digital image data, e.g., digital video data or digital still image data, is classified into one of a plurality of content classes based on histogram of pixel intensity values of the frame. The content classes may represent various levels of brightness, contrast, or the like. To classify the frame into the corresponding content class, a shape of the histogram may be analyzed using various histogram statistics. Based on the content class of the frame, the pixel intensity values of the frame are mapped to new pixel intensity values.

Abstract: A method for processing biochemical fine powders of ginseng or the like to obtain effective ingredients, mainly including the steps of harvesting raw material, washing and dehydrating the same; forming the raw material into a mixture of liquid and paste by using millers, rollers, roller millers and/or kneaders; filtering the mixture of liquid and paste to form a suspension; and drying the suspension to form very fine powders which contain active cells and high quality ingredients of ginseng or the like. Furthermore, additional steps of sedimentation and separation after the filtering step; keeping the raw material fresh (e.g. vacuum forming or keeping it at low temperature) after dehydrating the same; sterilization (e.g. ultra-violet light, high temperature, gamma ray radiation, etc.) during or after the drying step; concentrating the suspension (e.g. sudden cooling or low temperature low pressure treatment) after the separation step; extraction; distillation; physical separation, and ionic exchange.