In order to accurately detect a subject to be detected and reduce manufacturing or maintenance costs, this optical detection device determines whether there is a subject to be detected by determining a correction coefficient for correcting data from an image captured by a capturing sensor through a filter unit with an image data estimation value from when an image is captured without the filter unit, and comparing an image data estimation value obtained through correction using the correction coefficient from the image data with captured data obtained by capturing a detection area in a state where the filter unit is not in front of the capturing sensor.

A well plate cover includes a base defining a base plane, and a plurality of insertion elements. At least a portion of each of the insertion elements is transparent. Each of the insertion elements is coupled to the base, and extends, in a direction orthogonal to the base plane, from the base to a distal end surface of the insertion element. The distal end surface of each of the insertion elements includes an apex that, when the respective insertion element is inserted into a well of a well plate, extends further into the well than any other portion of the distal end surface. The apex is a point, a line, or a plane having a diameter that is less than one half of a maximum diameter of the distal end surface.

The invention relates to a method and device for orienting an umbilicated fruit, in which, during a first orientation phase (22), the presence of at least a portion of an umbilicus is detected in at least one initial image (II), then the fruit is driven (24) in spinning rotation about a first axis of rotation at an angular amplitude of between 5° and 45°, and then the presence of at least a portion of an umbilicus is detected in at least one subsequent image (IU). If at least a portion of an umbilicus is detected in at least one initial image (II) and no longer detected in each subsequent image (IU), the first orientation phase is stopped and the method is continued.

An identification apparatus includes a window unit including a passage surface on an upper side configured to allow a sample supplied from a conveyance unit to slide along and pass on the passage surface, a light irradiation unit disposed below the window unit, spaced a certain distance from the passage surface, and configured to irradiate the sample with a primary light through the window unit, a light collection unit disposed below the window unit and configured to collect a secondary light from the sample through the window unit, and an acquisition unit configured to acquire identification information for identifying a property of the sample based on the secondary light collected by the light collection unit.

Examples relate to a method, an apparatus and a computer program for detecting a presence of airborne particles. A reference measurement of an environment of a depth image sensor module is obtained. The reference measurement is based on a measurement of modulated light in a first time interval. The modulated light is reflected by features of the environment of the depth image sensor module. A subsequent measurement of modulated light is obtained in a second time interval. The presence of the airborne particles is detected based on the subsequent measurement of the modulated light, by using the reference measurement performed in the first time interval to disregard all or part of the features of the environment of the depth image sensor module. A signal indicative of one or more properties of the detected airborne particles is generated based on the detected presence of the airborne particles.

A first series of images of a first fluid is received. A first set of fluid characteristics of the first fluid is determined from the first series of images. A second series of images of a second fluid is received. A second set of fluid characteristics of the second fluid is determined from the second series of images. A match is determined to be found between the first set of fluid characteristics and the second set of fluid characteristics. The second fluid is identified based upon determining that the first set of fluid characteristics matches the second set of fluid characteristics.

Provided are a gas detection device, an information processing device, and a program which enable a user himself/herself to easily determine whether a gas leak has occurred. The gas detection device includes: a first imaging section configured to capture an image of an inspection region in an infrared region; a second imaging section configured to capture an image of the inspection region in a wavelength range that is not influenced by light absorption by gas; and a hardware processor configured to perform image processing for detecting a gas in a first image captured by a first imaging section, and to perform control to simultaneously display various types of images on a display section from a display target image group including the first image, a second image captured by a second imaging section, and a third image subjected to the image processing.

A method may include obtaining a laser image of a food product. The method may include obtaining an ultraviolet (UV) image of the food product. The method may include determining a decay value of the food product, based on obtaining the laser image of the product and obtaining the UV image of the food product.

A method for extracting spectral information of a substance under test includes: identifying a pixel region A(x, y) occupied by an object under test from a hyperspectral image acquired; extracting a specular reflection region A.sub.q and a diffuse reflection region A.sub.r from the pixel region A(x, y), and calculating a representative spectrum I.sub.q(ω) of the specular reflection region A.sub.q and a representative spectrum I.sub.r(ω) of the diffuse reflection region A.sub.r, respectively; by comparing each element in the representative spectrum I.sub.q(ω) of the specular reflection region A.sub.q with each element in the representative spectrum I.sub.r(ω) of the diffuse reflection region A.sub.r, separating information of a light source from spectral information of the object to obtain a first spectral invariant C(ω). This method does not require additional spectral information of the light source, which improves the analysis efficiency.

A system for measuring (200) a sample (2) by deflectometry comprising: a source (10) for generating a light beam in a source plane (105); an illumination module (19) for forming an illumination beam (9) comprising: a first converging optical element (18); a first selection optical element (16) with a first aperture (160); reflective matrix optical modulation means (30) to form a pattern (7), said first aperture (160) being configured to control the angles of said illumination beam (9) on said reflective matrix optical modulation means (30); a Schlieren lens (20) for obtaining an angle-intensity encoding of said pattern (7) on the sample (2); imaging (40) and detecting means (50) for detecting an image of said sample (2).