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The Mosaic dialog box appears.
Step 4: Change the Height and Width values in the respective boxes.
Step 5: Click on the OK button.
The Mosaic filter will apply on the image.
Using Image Mode Tool
The Image Mode tool helps you change the mode of the image. It contains following options:
• Default: It is default displayed and brings no changes to the graphic object.
• Grayscale: It is a representation of images using shades of gray, from black to white, without color.
• Black/White: It converts the pixels of the image into black and white depending on the brightness
of the pixel.
• Watermark: It increases the transparency of the image to give it a watermark effect.
Follow the given steps to use the Image Mode tool:
Step 1: Select the image in the document on which you want to apply Image Mode tool. The Image toolbar appears.
Step 2: Click on the Image Mode tool. A drop-down menu appears.
Step 3: Select each option one by one and see the effect on the image.
Grayscale Black/White Watermark
Changing the Image Colours Using Color Tool
Color tool present on the Image toolbar helps you to change the RGB colour combinations along with brightness,
contrast, and gamma of the image. Follow the given steps to use the Color tool:
Step 1: Select the image in the Writer document.
Digital Documentation (Advanced) using LibreOffice Writer 153

