Methods and apparatus according to various aspects take as input image data in a lower-dynamic-range format and produce as output enhanced image data having a dynamic range greater than that of the input image data image data). The screen is defined by a plurality of bins having a predetermined number of pixels. In addition, an operation in which the outer cover is exposed to an isocyanate solution is described to improve certain physical properties of the resulting golf ball. The tension adjusting mechanism slides up and down with the motion of the chair, and by this action the tension of the elastic band increase or decrease significantly, making the workout routine a challenge or pleasure as per one’s choice.