A computer-implemented picture processing method, comprising: identifying a target area where a quick response, QR, code is located in a picture; obtaining (S 102; S203) parameters of the picture; and performing (S103; S204) effacing process on the target area of the picture based on the parameters; wherein the parameters comprise at least one of: first parameters of other areas of the picture other than the target area or second parameters of the target area; wherein the first parameters comprise a first dominant color system, and the second parameters comprise at least one of a second dominant color system, attributes of a central icon of the QR code and a fault-tolerant ratio of the QR code; wherein the step of obtaining (S102; S203) parameters of the picture comprises: obtaining first color values of pixels within a preset area of the other areas; dividing pixels into groups, wherein pixels contained in a same group have the same first color value; determining a color corresponding to a group having a largest number of pixels as the first dominant color system; wherein performing (S103; S204) the effacing process on the target area of the picture based on the parameters comprises: obtaining (S601; S810) an effacing method; wherein the effacing method is set based on a configuration file or a configuration database; and based on the parameters, performing the effacing process on the target area by adopting the effacing method comprising: performing a color setting operation based on the parameters within the target area. identifying a target area where a quick response, QR, code is located in a picture; obtaining (S 102; S203) parameters of the picture; and performing (S103; S204) effacing process on the target area of the picture based on the parameters; wherein the parameters comprise at least one of: first parameters of other areas of the picture other than the target area or second parameters of the target area; wherein the first parameters comprise a first dominant color system, and the second parameters comprise at least one of a second dominant color system, attributes of a central icon of the QR code and a fault-tolerant ratio of the QR code; wherein the step of obtaining (S102; S203) parameters of the picture comprises: obtaining first color values of pixels within a preset area of the other areas; dividing pixels into groups, wherein pixels contained in a same group have the same first color value; determining a color corresponding to a group having a largest number of pixels as the first dominant color system; wherein performing (S103; S204) the effacing process on the target area of the picture based on the parameters comprises: obtaining (S601; S810) an effacing method; wherein the effacing method is set based on a configuration file or a configuration database; and based on the parameters, performing the effacing process on the target area by adopting the effacing method comprising: performing a color setting operation based on the parameters within the target area. obtaining (S601; S810) an effacing method; wherein the effacing method is set based on a configuration file or a configuration database; and based on the parameters, performing the effacing process on the target area by adopting the effacing method comprising: performing a color setting operation based on the parameters within the target area.