Multiply Images

This function block performs a pixel-wise multiplication of two input images and outputs the resulting image. It is useful for masking, combining exposures, or applying per-pixel weight maps.

📥 Inputs

Image First image to multiply. Image Second image to multiply. (Inputs are read in order — first input is multiplied by second input.)

📤 Outputs

Image Resulting image after per-pixel multiplication.

🕹️ Controls

This block has no adjustable controls. The operation runs automatically when input images are provided.

⚙️ Running mechanism

• The block accepts two images, compares them, and produces a new image where each output pixel is the product of the corresponding pixels from the two inputs.

• Both input images must match in size. If they differ, the block will report an error and will not produce a valid output. Use an image resizer before this block when needed.

• Typical uses include applying masks, combining per-pixel weights, or multiplying channels for specialized effects.

🎯 Features

• Simple and fast per-pixel multiplication of two images.

• Works with any image format accepted by the system (color or grayscale), provided both inputs share the same dimensions.

• Produces a single image output ready for further processing or visualization.

📝 Usage Instructions

1. Connect the image you want to modify to the first Image input.

2. Connect the second Image (mask, weight map, or second image) to the second Image input.

3. Ensure both images have the same width and height. If they do not, add an image resizing step before this block.

4. The block outputs the multiplied image on the Image output for visualization or further processing.

💡 Tips and Tricks

• If images have different sizes, insert Image Resize (or Image Resizer) before this block to match dimensions.

• To avoid unexpected brightness/overflow, consider preparing inputs with Normalize Image or scale one input using Divide Images before multiplication.

• For blending or weighted combinations, try combining this block with Add Images or Add Images Weighted depending on the desired effect.

• Use Apply Mask to create a binary mask image and multiply it with a source image to quickly mask out regions.

• Preview results with Show Image and save results using Image Write or Image Logger for logging/export.

🛠️ Troubleshooting

• Error about mismatched image sizes: ensure both inputs have identical width and height; use Image Resize to fix this.

• Unexpected brightness or clipping: normalize or scale inputs before multiplication (see Normalize Image and Divide Images).

• No output appears: verify that both input connections are providing valid image data and that the block is receiving active input.