Patent ID: 8401280

Claim:
A device for improving stereo matching results, comprising: a stereo camera outputting binocular disparity images between two images preprocessed according to a plurality of preprocessing conditions; a discrete cosine transform circuit generating discrete cosine transform (DCT) coefficients by performing discrete cosine transform (DCT) on the binocular disparity images; a streak estimation circuit receiving the generated DCT coefficients and estimating amounts of streaks distributed on a screen by using AC coefficients, including streak pattern components in a predetermined direction, of the DCT coefficients; a condition estimation circuit estimating a preprocessing condition, corresponding to the smallest amount of streaks of the estimated amounts of streaks, of the plurality of preprocessing conditions, as an optimal condition; and a streak removal circuit generating binocular disparity images without the streaks according to the optimal condition by changing predetermined AC coefficients of the DCT coefficients obtained by the discrete cosine transform circuit and performing inverse discrete cosine transform on the changed DCT coefficients.