Image processing device, image processing method, and image processing system

摘要

According to one embodiment, an image processing system includes an image processing device, an encoder, and a memory. The image processing device is configured to select one of a plurality of resolution candidates as a unified resolution, and to scale, according to the unified resolution, a first input image and a second input image to generate a first output image and a second output image, respectively. The first input image has a first resolution, the second input image has a second resolution different from the first resolution, and a resolution of the first output image is identical to a resolution of the second output image. The encoder is configured to encode the first output image and the second output image to generated encoded data. The memory is configured to store the encoded data.

主权项

1. An image processing system comprising:
an image processing device configured to select one of a plurality of resolution candidates as a unified resolution, and to scale, according to the unified resolution, a first input image and a second input image to generate a first output image and a second output image, respectively,
the first input image comprising a first resolution,the second input image comprising a second resolution different from the first resolution,a resolution of the first output image being identical to a resolution of the second output image; an encoder configured to encode the first output image and the second output image to generate encoded data; and a memory configured to store the encoded data; wherein the image processing device comprises:
a corresponding area detector configured to detect a corresponding area in the second input image which corresponds to a block in the first input image;a resolution converter configured to
generate a first converted image by scaling the block according to a third resolution which is one of the resolution candidates,generate a second converted image by scaling the corresponding area according to the third resolution,generate a re-converted image by scaling the first converted image, according to a ratio between the first resolution and the third resolution, andscale, according to the unified resolution, the first input image and the second input image;a cost calculator configured to calculate a cost of scaling, according to the third resolution, the first input image and the second input image based on a first indication and a second indication, the first indication indicating a value obtained by quantifying an image quality difference based on differences between pixels corresponding to each other of the first converted image and the second converted image, the second indication indicating a value obtained by quantifying a degradation of a feeling of fineness based on differences between pixels corresponding to each other of the re-converted image and the block; anda resolution determiner configured to determine one of the resolution candidates as the unified resolution based on the cost.