QMap - Cropping and filling
Cropping is done by drawing out an area on the image and then filling in or out of the area with a color. It is mainly used in multi-image splicing, and a single image is locally cropped to achieve mutual fusion during splicing. In addition, by using the different combinations of red, green and blue in the channel selection, combined with the different filling colors, wonderful background changes and key area annotations can be achieved, which are varied.
Now according to the software function interface, the introduction is as follows:
Right-click and select the image to be processed. Then use the tools provided by this software to create regions. For the operation of regions, please refer to the introduction to the "Region editing" unit.
2. Channel selection
By default, the red, green and blue channels are selected at the same time. When a channel is not selected, the image data of that channel is retained. The selected channel is replaced with the value of the corresponding channel of the fill color.
3. Fill color
Click the color selection drop-down button to select various colors. The default is black, which is also the characteristic color of transparency.
4. Fill Inside the region
By default, all image data outside the area is filled with the fill color. That is, the red, green and blue values of the fill color are used to replace the red, green and blue values of the pixels respectively, and the original values are retained when the channel is not selected.
5. Test or Process
To perform the operation of this unit, there must be a region on the image, otherwise it cannot continue. Click the "Test" button for a quick preview, and click the "Process" button to complete the operation.
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