Abstract: An image encoding device 1 of the present disclosure includes: a neighboring pixel non-reference predictor 11 for generating a predicted image by predetermined neighboring pixel non-reference prediction with respect to each pixel signal of an original image of a block unit; a filter processor 12 for performing a low-pass filter process to a prediction signal located at a boundary of a block of the predicted image by using the decoded neighboring signal neighboring to the block of the predicted image; a prediction residual signal generator 55 for generating a prediction residual signal of a block unit using an predicted image of a block unit; an orthogonal transformer 14 for dividing the prediction residual signal of the block unit into block shapes designated in advance. An image decoding device 5 of the present disclosure includes a neighboring pixel non-reference predictor 53, a filter processor 54, and an inverse orthogonal transformer 52, that are corresponding to the image encoding device 1.

Abstract: In the present invention, at least two component signals that represent luminance and a color difference in an original signal having a predetermined image format are encoded/decoded.

Abstract: An image coding device is provided with a determination unit which determines whether to apply an orthogonal transform to a transform block obtained by dividing a prediction difference signal indicating a difference between an input image and a predicted image or perform a transform skip by which the orthogonal transform is not applied, and an orthogonal transform unit which performs processing selected on the basis of the determination, the image coding device comprising a quantization unit which, when the transform skip is selected on the basis of the determination, quantizes the transform block using a first quantization matrix in which the quantization roughnesses of all elements previously shared with a decoding side are equal, and when the orthogonal transform is applied to the transform block on the basis of the determination, quantizes the transform block using the first quantization matrix or a second quantization matrix that is transmitted to the decoding side.

Abstract: In the present invention, at least two component signals that represent luminance and a color difference in an original signal having a predetermined image format are encoded/decoded.

Abstract: Since a delaying part (14) delays transmission of a video signal, the timing at which a decoded video signal is input into a multiplex processing part (16) matches the timing at which an analysis result from an encoded information analyzing part 13 is received by the multiplex processing part (16). It is, therefore, possible to perform processing for showing the quality level of a video on the same screen, and thus a large capacity memory is unnecessary.

Abstract: Since a delaying part (14) delays transmission of a video signal, the timing at which a decoded video signal is input into a multiplex processing part (16) matches the timing at which an analysis result from an encoded information analyzing part 13 is received by the multiplex processing part (16). It is, therefore, possible to perform processing for showing the quality level of a video on the same screen, and thus a large capacity memory is unnecessary.