| 摘要 |
The image coding apparatus according to the present invention is an image coding apparatus, including an imaging unit, a chroma quantization width adjustment unit configured to determine a chroma quantization width using a first method when the amount of the incident light on the imaging unit is larger than the predetermined amount, and to adjust the chroma quantization width such that the chroma quantization width is larger than a quantization width determined using the first method when the light amount judging unit judges that the amount of the incident light is smaller than the predetermined amount, and a luma quantization width adjustment unit configured to determine a luma quantization width using a second method without being dependent on the amount of the incident light.
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