Image Encoding Device And Method, And Image Decoding Device And Method

Abstract: The present disclosure relates to an image encoding device and a method, and an image decoding device and a method that are designed to improve encoding efficiency in IntraBC. In an example according to the present technology, a screen is divided into four slices (Slices #0 through #3). In a case where reference to a different slice is prohibited, the range that can be referred to from the current CTU in Slice #2 is only the decoded portion in Slice #2, and therefore, any block in Slice #1 cannot be referred to, for example. In the case of the present technology, on the other hand, decoded different slices (Slice #0 and Slice #1) are included in the referable range, and accordingly, a block in Slice #1 can be referred to from the current CTU in Slice #2, for example, as shown in Fig. 5. The present disclosure can be applied to image processing devices, for example.

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