Patent ID: 8711255
Filing Date: 2014-04-29
Classification: H04N

Abstract:
1. A visual processing apparatus comprising: a spatial processor that receives an image signal and outputs a representative value of luminance levels of a vicinity portion of a target pixel; and a visual processor that receives the image signal and the representative value, obtains an output signal using a conversion characteristic, and outputs the output signal, wherein the conversion characteristic is represented by a first tone curve, the first tone curve has an input variable corresponding to the image signal and an output variable corresponding to the output signal, the first tone curve changes according to the representative value, the first tone curve has a property in which a rate of change of the output variable with respect to the input variable is greater than that of a second tone curve, in the vicinity of a point of intersection between the first tone curve and the second tone curve, and the second tone curve represents a relationship between the input variable and the output variable outputted when the image signal is equal to the representative value.