To provide a contour emphasis circuit and a contour emphasis method that achieve contour emphasis while suppressing occurrence of jaggies.

The contour emphasis circuit EE is composed by serially connecting an interpolator circuit 21, an edge emphasis processing circuit 22, a clipping circuit 23, and a decimeter circuit 24. The interpolator circuit 21 executes up-sampling processing, which increases a sampling rate by executing interpolation, to an inputted signal. Next, the edge emphasis processing circuit 22 executes edge emphasis processing to an up-sampled signal. The clipping circuit 23 executes saturate calculation regarding dynamic range restrictions on output. Next, the decimeter circuit 24 executes down-sampling processing, which reduces the sampling rate by executing thinning-out, to a signal subjected to the edge emphasis processing.

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