Learning ImageMagick 1: LoMo Effect

ImageMagick is a powerful image processing command line tool. Complex Image operations can be completed with only a few instructions.

The ImageMagick command design allows almost any less complex image operations to be completed using a single line of command.

In theory, a LoMo effect can be done using commands within two lines, but I do not have enough understanding of ImageMagick, and I have done it using seven lines.

As follows:

Set layer1color = "# 3066ff"
: # C0ffff "#000699"
Set layer2color = "#000699"
Sets layer1alpha = 180
Sets layer2alpha = 180

Convert % 1-fill % layer1color %-colorize 100% layer1.png
Convert layer1.png-Alpha on-Channel A-evaluate set % layer1alpha % layer1.png
Convert % 1-fill % layer2color %-colorize 100% layer2.png
Convert layer2.png-Alpha on-Channel A-evaluate set % layer2alpha % layer2.png
Convert % 1 layer1.png-Compose softlight-composite temp.png
Convert temp.png layer2.png-compose
Exclusion-composite result.png
Convert result.png-Background black-Vignette 0 × 65000 result.png

Del layer1.png
Del layer2.png
Del temp.png

Imdisplay % 2

Put the above Code in a BAT file and run it. You can also download it here. (Specify the input/output file name)

Briefly describe the code. The basic LoMo effect merging steps are divided into the following three steps: Demonstration video

1: Use a monochrome mask with an alpha channel to perform soft light composition on the input image.

2: Use an alpha-channel monochrome mask to apply the exclusion composition to the image obtained in step 1.

3: add an angle

There are also more detailed processing steps, such as glare and noise. Not considered here.

Note:

You can change the color values of the two masks and the alpha channel values to obtain different LoMo effects.