摘要:
A coding device having a judgment unit configured to judge whether or not a GOP is a GOP where GOP unit flicker is readily visible in an image decoded after encoded the GOP, for each of GOPs forming image data to be coded, and a coding unit configured to apply processing for suppressing the GOP unit flicker when the judgment unit judges that the GOP is a GOP where flicker is readily visible.
摘要:
The present invention relates to an image processing apparatus and a method and a program that enable an amount of code to be suppressed below a desired value with more reliability. An emergency mode determining section 142 determines that the amount of code of a next picture is likely to exceed an upper limit if a target bit calculated by a rate controlling section 118 exceeds a predetermined upper limit. If it is determined that the amount of code of the next picture is likely to exceed the upper limit, the code amount controlling section 142 controls an orthogonal transducing section 114 to replace a transform coefficient of a predetermined frequency component with zero, controls an intra predicting section 125 to restrict intra prediction modes to be applied, and controls a mode determining section 127 to restrict inter prediction modes to be applied. The prevent invention can be applied to an encoding apparatus.
摘要:
The present invention relates to an image processing apparatus and a method and a program that enable an amount of code to be suppressed below a desired value with more reliability. An emergency mode determining section 142 determines that the amount of code of a next picture is likely to exceed an upper limit if a target bit calculated by a rate controlling section 118 exceeds a predetermined upper limit. If it is determined that the amount of code of the next picture is likely to exceed the upper limit, the code amount controlling section 142 controls an orthogonal transducing section 114 to replace a transform coefficient of a predetermined frequency component with zero, controls an intra predicting section 125 to restrict intra prediction modes to be applied, and controls a mode determining section 127 to restrict inter prediction modes to be applied. The prevent invention can be applied to an encoding apparatus.
摘要:
A coding device having a judgment unit configured to judge whether or not a GOP is a GOP where GOP unit flicker is readily visible in an image decoded after encoded the GOP, for each of GOPs forming image data to be coded, and a coding unit configured to apply processing for suppressing the GOP unit flicker when the judgment unit judges that the GOP is a GOP where flicker is readily visible.
摘要:
An image processing system includes a decoder configured to decode an encoded image and an encoder configured to encode the image decoded by the decoder. The decoder includes a decoder adapted to decode the encoded image, and a detector adapted to detect, on the basis of the image, a fade period included in the image and supply a fade information signal indicating a detection result to the encoder. The encoder includes an acquisition unit adapted to acquire the fade information signal, and a changing unit adapted to change a process performed in the encoding of the image in accordance with the fade information signal.
摘要:
An image processing apparatus capable of improving image quality, includes a deblocking filter that adjusts a plurality of parameters related to deblocking processing on the basis of activity of an image calculated by an activity calculation section, the total sum of orthogonal transformation coefficients of the image calculated by an orthogonal transformation section, complexity of the image calculated by the rate control unit, or the total sum of prediction errors of the image calculated by a prediction error addition unit.
摘要:
The present invention relates to an image processing apparatus, method, and program that are capable of improving image quality. A deblocking filter 113 adjusts the value of disable_deblocking_filter_idc, slice_alpha_c0_offset_div2, or slice_beta_offset_div2 on the basis of Activity of an image calculated by an activity calculation section 141, the total sum of orthogonal transformation coefficients of the image calculated by an orthogonal transformation section 142, Complexity of the image calculated by the rate control unit 119, or the total sum of prediction errors of the image calculated by a prediction error addition unit 120. The present invention is applicable to an encoding apparatus.
摘要:
Motion prediction and compensation circuit does not select Skip mode and Direct mode in motion prediction and compensation mode when a difference between prediction motion vector and actual motion vector exceed predetermined standard.
摘要:
In a picture information coding device for outputting picture compression information based on an AVC encoding scheme, optimum reference relationships in a GOP structure including hierarchical B pictures can be obtained and random access from an I picture that is not an instantaneous decoding refresh picture can be performed.When multiple-frame prediction is performed, with a memory management control operation command generation unit (13), a reference B picture that exists between a picture and a P picture or I picture is registered as a long-term reference picture using a memory management control operation command to manage a picture in a decoded picture buffer. The reference B picture is placed as the first in a reference picture list using a reference picture list reordering command when a B picture that exists between the P picture or I picture and the reference B picture is processed. The long-term reference picture in the decoded picture buffer is set to be a non-reference picture by setting the maximum value of a long-term frame index to [0] using a memory management control operation command when the P picture or I picture is processed. Random access from the I picture that is not an instantaneous decoding refresh picture is performed.
摘要:
A coding device makes a GOP setting to input image data, and applies a coding process to the input image data on a macroblock basis successively by intra and inter prediction to output coded data. The device includes an orthogonal transform section; a quantization section; a coding section; and a rate control section. The rate control section includes an activity detection section; and a prediction residual detection section. The rate control section calculates, in pictures configuring a GOP, a target code amount of any picture that has not yet been subjected to the coding process, another target code amount for a macroblock of any of the pictures relating to the coding process from the target code amount of the picture not yet subjected to the coding process, and the quantization scale of the quantization section in which a generated code amount serves as the target code amount.