Visible light sensor configured for glare detection and controlling motorized window treatments

At least one computer-readable medium having stored thereon instructions that, when executed by at least one control circuit, cause the at least one control circuit to:

• retrieve one or more images;
• calculate a background luminance of an image of the one or more images, wherein the background luminance is a value from which a location of a glare condition is detected for controlling a shade position of a motorized window treatment;
• reorder pixels of the image from darkest to lightest;
• calculate a luminance of a first pixel that is a predetermined percentage of a distance from the darkest pixel to the lightest pixel;
• set the luminance of the first pixel as the background luminance;
• and
• detect the location of the glare condition when a ratio of the luminance of a second pixel to the background luminance is greater than a predetermined contrast threshold.

A method of detecting a location of a glare condition from which a shade position of a motorized window treatment is controlled, the method comprising:

• recording one or more images;
• calculating a background luminance of an image of the one or more images, wherein the background luminance is a value from which the location of the glare condition is detected for controlling the shade position of the motorized window treatment;
• reordering pixels of the image from darkest to lightest;
• calculating a luminance of a first pixel that is a predetermined percentage of a distance from the darkest pixel to the lightest pixel;
• setting the luminance of the first pixel as the background luminance;
• and
• detecting the location of the glare condition when a ratio of the luminance of a second pixel to the background luminance is greater than a predetermined contrast threshold.

A device for detecting a location of a glare condition from which a shade position of a motorized window treatment is controlled, the device comprising:

• a memory configured to store one or more images;
• and
• a control circuit configured to:
• retrieve an image of the one or more images from memory;
• calculate a background luminance of the image of the one or more images, wherein the background luminance is a value from which the location of the glare condition is detected for controlling the shade position of the motorized window treatment;
• reorder pixels of the image from darkest to lightest;
• calculate a luminance of a first pixel that is a predetermined percentage of a distance from the darkest pixel to the lightest pixel
• set the luminance of the first pixel as the background luminance;
• and
• detect the location of the glare condition when a ratio of the luminance of a second pixel to the background luminance is greater than a predetermined contrast threshold.