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To find out the DPI (dots per inch) of your figures and pictures, you can follow these steps:

1. Right-click on the image you want to check and select "Properties" from the drop-down menu.
2. In the Properties window, click on the "Details" tab.
3. Scroll down until you see the "Image" section.
4. Look for the "Horizontal resolution" and "Vertical resolution" values. These values represent the DPI of the image.

If the DPI values are not listed in the Properties window, you can use an image editing software like Adobe Photoshop or GIMP to check the DPI. Here's how:

1. Open the image in the image editing software.
2. Click on the "Image" menu and select "Image Size" or "Canvas Size".
3. In the Image Size or Canvas Size window, look for the "Resolution" field. This field represents the DPI of the image.

If the DPI of your figures and pictures are lower than 1000dpi, you can try to increase the DPI using the image editing software. However, keep in mind that increasing the DPI may also increase the file size of the image.