Abstract: An apparatus for processing an image signal includes an RGB color difference calculator and a gain calculator. The RGB color difference calculator calculates an RGB color difference of a color to be displayed in each of unit pixels based on a red image signal, a green image signal, and a blue image signal to be input to the unit pixel. The gain calculator calculates a gain for the blue image signal based on the RGB color difference.

Abstract: Disclosed herein is a housing panel of an exhaust gas recirculation cooler which is used to manufacture a housing that houses therein a cooling module for cooling recirculation exhaust gas of a vehicle. The housing panel includes a pair of pre-side surface parts which forms respective side surface parts of the housing, and a pre-upper surface part which forms an upper surface part of the housing and is integrally formed between the pair of pre-side surface parts. Two bending parts each having an obtuse angle are formed in the pre-upper surface part at positions spaced apart from each other by a predetermined distance. The torsion caused by stress can be reduced, and the flatness and strength can be enhanced.