Patent ID: 8270745
Filing Date: 2012-09-18
Classification: H04N

Abstract:
1. An image processing device comprising: a predictive quantization factor determining unit configured to determine a predictive quantization factor that is predicted to be approximate to a basic quantization factor with which a generated code quantity obtained by encoding an input image is predicted to be the most approximate to a target code quantity; a simplified encoding unit configured to encode the input image in a simpler manner than an encoding on the basis of the predictive quantization factor and quantization factors approximate to the predictive quantization factor, thereby calculating generated code quantities obtained through simplified encoding; an encoding unit configured to encode the input image on the basis of the predictive quantization factor, thereby calculating a generated code quantity obtained through encoding; a code quantity ratio calculating unit configured to calculate a code quantity ratio of a generated code quantity that is calculated by the encoding unit and that is based on the predictive quantization factor to a generated code quantity that is calculated by the simplified encoding unit and that is based on the predictive quantization factor; and a correcting unit configured to multiply the code quantity ratio by generated code quantities that are calculated by the simplified encoding unit and that are based on the quantization factors approximate to the predictive quantization factor, thereby correcting the generated code quantities based on the quantization factors approximate to the predictive quantization factor.