Image noise reduction and filter data processing method and apparatus, and computer device

An image noise reduction apparatus, comprising:

• at least one memory configured to store computer program code;
• at least one processor configured to read the program code and operate as instructed by the program code, the program code comprising:
• image obtaining code configured to cause at least one of the at least one processor to obtain a first image to be processed and a second image as a reference image;
• motion intensity determining code configured to cause at least one of the at least one processor to:
• obtain a block of the first image by dividing the first image;
• and
• determine motion intensity of the block of the first image based on the second image;
• description information obtaining code configured to cause at least one of the at least one processor to obtain filter coefficient description information matching the motion intensity;
• filter coefficient determining code configured to cause at least one of the at least one processor to:
• obtain a target pixel difference between a third pixel point value of the block of the first image and a fourth pixel point value of the second image;
• and
• determine a target filter coefficient corresponding to the target pixel difference based on the filter coefficient description information;
• and
• noise reduction image determining code configured to cause at least one of the at least one processor to determine a target noise reduction image of the first image based on the target filter coefficient,
• wherein the filter coefficient description information is based on:
• a first pixel difference of a first pixel point value of the first image and a second pixel point value of the second image, and
• a filter coefficient,
• wherein the filter coefficient is negatively correlated with the first pixel difference,
• wherein a degree of change of the filter coefficient is positively correlated with the motion intensity, and
• wherein the filter coefficient is a value for representing the filter coefficient or is obtained by performing a calculation on the value for representing the filter coefficient.

A non-transitory computer-readable storage medium, storing computer code which, when executed by at least one processor, causes the at least one processor to at least:

• obtain a first image to be processed and a second image as a reference image;
• obtain a block of the first image by dividing the first image;
• determine motion intensity of the block of the first image based on the second image;
• obtain filter coefficient description information matching the motion intensity;
• obtain a target pixel difference between a third pixel point value of the block of the first image and a fourth pixel point value of the second image;
• determine a target filter coefficient corresponding to the target pixel difference based on the filter coefficient description information;
• and
• determine a target noise reduction image of the first image based on the target filter coefficient,
• wherein the filter coefficient description information is based on:
• a first pixel difference of a first pixel point value of the first image and a second pixel point value of the second image, and
• a filter coefficient,
• wherein the filter coefficient is negatively correlated with the first pixel difference,
• wherein a degree of change of the filter coefficient is positively correlated with the motion intensity, and
• wherein the filter coefficient is a value for representing the filter coefficient or is obtained by performing a calculation on the value for representing the filter coefficient.