By directing the light towards a wall or other surface, you can create a soft and diffused glow that adds depth and dimension to your outdoor area. To achieve the best results, it's important to position the lights at the right distance and angle. By placing the light fixture a few feet away from the wall and aiming it sideways, you can create a beautiful, even light that illuminates the surrounding area without overpowering it. This technique is also ideal for highlighting specific features of your outdoor space, such as trees, a beautiful garden wall or a unique architectural element. See more technique of positioning of spot lights.

Spotlights have low saturation and high brightness such as overexposure or some pure white objects. May be shape and gradient could be useful to do basic segmentation... it would be interesting to build a machine learning approach around this problem. have fun :)

It would be easier to recover dark region if a bit of information will survive see Automated Removal of Partial Occlusion Blur for reference.

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Searching around the literature I found the following 3 interesting papers: Real-time highlight removal using intensity ratio, Efficient and Robust Specular Highlight Removal and Fast and High Quality Highlight Removal from A Single Image. The first two that they provide the code as well gave not that good results.

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Wall Wash lights, spot lights, flood lights fixtures do exactly what they sound like they do: they bathe an area with light and have “soft” or "hard" edges on the beam. They are great for evenly lighting up large areas like trees, bushes, walls, or floors.

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You can't get back information you lost due to pixel saturation. All you can do is to try some synthetic reconstruction using information from neighbour like cv::inpaint function does. Just to show, below is a simple code that use uses cv::inpaint.

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Hi guys, I am interested to find a way to detect and remove the specularities from a given indoors image. For example give the following image:

you can see that there is the main specular spot in the middle of the image and some minor ones around. I am mostly interested for the main cases but if I could extract the other smaller cases as well that would be perfect.

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Using more than one image is another approach, this Improved seeded region growing for detection of water bodies in aerial images is a bit different but could be a starting point.

@pklab no problem, no need for worries :-). I am aware of @Guanta 's answer as well as the papers that you suggest, though they seem a bit outdated. As I mentioned in my initial post I have already tried the following papers Real-time highlight removal using intensity ratio and here is the code and Efficient and Robust Highlight Removal and code here which seem to be included in the state of the art at the moment but without that good results. Then there is also this work:

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There are several benefits that make them a great choice. Firstly, they are energy-efficient and use less electricity, which can lead to significant savings on your electricity bills. Additionally, they require lower maintenance compared to traditional lighting options, which also helps save money in the long run. Another advantage of flood lights is their longer life span, which means less frequent replacement and fewer expenses.Moreover, flood lights are not affected by weather or temperature fluctuations, which makes them a reliable lighting option for outdoor use. LED flood lights, in particular, are the safest alternative as they do not produce heat. Spot lights are a versatile lighting option that can be used in a variety of ways to enhance the look and function of your outdoor space. One of the main benefits of spot lights is their ability to highlight specific features, such as a beautiful garden or a unique architectural detail. In addition, spot lights are a great way to improve safety and security by illuminating dark corners or pathways. They are also highly energy-efficient, using a smaller amount of electricity. Spot lights are also easy to install and maintain, with low maintenance costs and a long lifespan. We have a lot of spot lights come in a wide range of styles, from modern to traditional, making it easy to find a design that fits your personal taste and complements the aesthetic of your outdoor space.

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Interior spotlights are directional lighting fixtures that are often ceiling- or wall-mounted and can be adjusted to focus light on specific areas or objects ...

Fast and High Quality Highlight Removal from A Single Image which says that outperforms the previous both but I unfortunately they do not share the code at the moment. I am in doubts, because the datasets that they use of evaluation are not that close to a real life case like the one I am showing above for that reason I was asking in case someone has come up with something else.

I don't have a ready to use solution... sure it isn't easy but your could start from @Guanta answer here, this paper Real-Time Specular Highlight Removal Using Bilateral Filtering and this also is nice A Survey of Specularity Removal Methods.

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where it seems to be a specularity but in reality it's an overexposure. Therefore, I would like to hear your ideas regarding how I could optimize the detection or if you have any other implementation/paper that might help. The idea is to create a specular hightlights map and recover afterwards the intensity of pixels, pointed from the map. Thanks.

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you see that it detects the main specular spot but at the same time anything else white-ish is a candidate for detected as specularity as well.

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The main difference between spotlights and floodlights lies in their beam width and applications. Spotlights produce a narrow, focused beam of light, typically no more than 45 degrees wide, ideal for accentuating specific elements like artwork, architectural features, or landscape elements.Floodlights, on the other hand, cast a wider beam, up to 120 degrees, making them perfect for illuminating larger spaces such as driveways, stages, or parking lots with even light coverage.To determine the width of a light beam at a specific distance, use the formula: Beam Angle x 0.018 x Distance from Light Bulb = Beam Width. For example, an 80-degree floodlight placed 10 feet away will have a beam width of 14.4 feet (80 x 0.018 x 10). Similarly, a 30-degree spotlight positioned 15 feet away will produce a beam width of 8.1 feet (30 x 0.018 x 15).

@pklab thanks for the answer, however my main problem is not recovering the specular spot but first detecting it. For recovering, inpaint() could be one option but I have come upon some nice techniques (I do not remember now the sources) that it was used for recovering pixel intensity from shadow areas. Also the paper that you suggest could be an option. However, detecting the specular hotspots seems not be that easy as it seems. Moreover, unfortunately hardware-wise there is not the possibility something to be done. You get my upvote, though ;-).

Installing landscape floodlights can enhance the appearance and safety of your outdoor spaces. Follow these steps for a successful installation: Plan the layout: Determine the areas you want to illuminate and the desired lighting effects. Consider the positioning of the floodlights, the angle, and the distance from the objects or areas you want to light up. Make sure to choose floodlights with appropriate wattage and beam angles to cover the intended area. Gather tools and materials: You will need a floodlight fixture, a mounting stake or bracket, an outdoor-rated electrical cable, a junction box, a waterproof wire connector, a screwdriver, a hammer, a shovel, and a power drill (if mounting on a wall or other hard surface). Turn off the power: Before starting the installation, ensure the power is turned off at the main electrical panel to avoid the risk of electric shock. Install the mounting stake or bracket: If using a stake, drive it into the ground using a hammer, making sure it's stable and secure. If using a bracket, drill holes and secure the bracket to the surface (e.g., wall, fence, or post) using appropriate screws or bolts. Attach the floodlight fixture: Mount the floodlight to the stake or bracket following the manual instructions. Ensure it's firmly attached and can be adjusted to the desired angle. Run the electrical cable: Dig a trench (6-12 inches deep) from the power source to the floodlight location. Lay the outdoor-rated electrical cable in the trench, leaving some slack near the floodlight for connection. Connect the floodlight: Use a waterproof wire connector to join the wires from the floodlight fixture to the electrical cable. Follow the manufacturer's instructions for proper wire connections (usually color-coded). Install a junction box: If necessary, install a junction box near the power source, following local electrical codes. Connect the electrical cable from the floodlight to the junction box. Connect to the power source: After completing all connections, restore power to the circuit and test the floodlight to ensure it's functioning correctly. Adjust the angle and direction of the beam as needed. Fill the trench and clean up: Once everything is working properly, backfill the trench and conceal the electrical cable. Clean up the area, and your landscape floodlight installation is complete. Note: If you're uncomfortable or inexperienced with electrical work, contact us or hire a licensed electrician to handle the electrical connections and ensure a safe installation.

I know it's a completely total different approach, but if you can control camera/acquisition, you could try to reduce the brightness/gain/shutter down to remove spotlight...