| 摘要 |
According to one embodiment, a video decoding apparatus decoding a video stream selectively generates one of an intra prediction image and an inter prediction image based on an encoding mode of a decoding object from the video stream and decoded images thereof, generates a residual decoded image based on a quantization parameter of a decoding object from the video stream, generates a decoded image by adding one of an intra prediction image and an inter prediction image selectively generated, and the residual decoded image, applies deblocking filter process for reducing a block distortion onto the decoded image, extracts information on an encoding mode from the video image stream to determine whether or not inter prediction processes for generating the inter prediction image should be simplified, and simplifies the inter prediction process step-by-step on the basis of the result of the determination.
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