this file contains the implementation of the "contraharmonic filter" using the basic formula of finding contraharmonic mean achieved through the use of for loops. contraharmonic filter can remove both -SALT n PEPPER noise from the image but not sim

扫描彩色负片也是一件十分繁杂的工作。 但是某些扫描软件可充分发挥凝集了在图象处理和光学影像技术领域数十年技术经验精华以及最新开发的胶片专业算法的威力。 因此，不必再根据各种类型负片的不同曝光特性和色彩平衡反复手动调节扫描仪的设置，也可一直获得满意的扫描效果。-Scanning color negative film is a very complex task. However, some scanning software can be fully condensed in the image