Linux command
ppmlabel 命令
文本
涉及管道、覆盖或删除，执行前请先确认路径和参数。
常用示例
Add text label to image
ppmlabel -text "[Hello World]" [input.ppm] > [output.ppm]
Add label at specific position
ppmlabel -x [10] -y [20] -text "[Label]" [input.ppm] > [output.ppm]
Add label with custom color and size
ppmlabel -color [white] -size [24] -text "[Label]" [input.ppm] > [output.ppm]
Add rotated label
ppmlabel -angle [45] -text "[Watermark]" [input.ppm] > [output.ppm]
Add label with background highlight
ppmlabel -background [black] -color [yellow] -text "[Warning]" [input.ppm] > [output.ppm]
Add multiple labels
ppmlabel -file [labels.txt] [input.ppm] > [output.ppm]
说明
ppmlabel adds text labels to PPM (Portable Pixmap) images. It reads a PPM image, renders one or more text strings at specified positions with optional color, size, and rotation, and writes the result as a new PPM image. Part of the Netpbm toolkit. Multiple labels can be placed on a single image by specifying multiple -text options or by using the -file option to read label specifications from a file. Each label can have independent position, color, size, and angle settings.
参数
- -text _string_
- Text string to render on the image.
- -file _filename_
- Read label commands from a file, one per line.
- -x _pixels_
- Horizontal position of the label from the left edge.
- -y _pixels_
- Vertical position of the label baseline from the top edge.
- -color _color_
- Text color (Netpbm color name or #rrggbb hex value).
- -background _color_
- Background color behind the text. Default is transparent (no background).
- -angle _degrees_
- Rotation angle in degrees counterclockwise. Default is 0.
- -size _pixels_
- Font height in pixels. Default depends on the built-in font.
FAQ
What is the ppmlabel command used for?
ppmlabel adds text labels to PPM (Portable Pixmap) images. It reads a PPM image, renders one or more text strings at specified positions with optional color, size, and rotation, and writes the result as a new PPM image. Part of the Netpbm toolkit. Multiple labels can be placed on a single image by specifying multiple -text options or by using the -file option to read label specifications from a file. Each label can have independent position, color, size, and angle settings.
How do I run a basic ppmlabel example?
Run `ppmlabel -text "[Hello World]" [input.ppm] > [output.ppm]` in a terminal, then adjust file names, paths, flags, or remote targets for your system.
What does -text _string_ do in ppmlabel?
Text string to render on the image.