Abstract: An image-pickup apparatus is disclosed which is capable of performing focus controls by plural AF methods and causing a user to confirm the focus control operation by each of the plural AF methods. The apparatus includes a controller which performs a first focus control and a second focus control by a method different from that of the first focus control, and an information output device which outputs information for causing a user to distinguish whether the first or second focus control is currently performed. The controller performs the second focus control after performing the first focus control, and the information output device outputs the information when the first focus control is performed and does not output the information when the second focus control is performed.

Abstract: When a face is detected from image signals, stability determination time is set for determining if the face is recognized in a stable manner, and a period of time for which the face is consecutively detected starts to be measured. Until the measured period of time exceeds the stability determination time, an AF evaluation value acquired from a normal frame set to include a face frame corresponding to the face is used to exercise TV-AF control. Once the measured time exceeds the stability determination time, TV-AF control is exercised based on AF evaluation values acquired from each of the face frame and the normal frame.

Abstract: An image-pickup apparatus is disclosed which is capable of restricting unnecessary focus control by an AF method other than the TV-AF method in the hybrid AF. The image-pickup apparatus includes a first detector which generates first information corresponding to a contrast state of a picked-up image, a second detector which detects second information differing from the first information and used for focus control, and a controller which performs focus processing that cyclically repeats first focus control using the first information and performs second focus control using the second information. In the focus processing, the controller is changed over between a state of restricting the second focus control and a state of allowing the second focus control, depending on a change amount of the contrast state.

Abstract: An image-pickup apparatus is disclosed which is capable of performing focus controls by plural AF methods and causing a user to confirm the focus control operation by each of the plural AF methods. The apparatus includes a controller which performs a first focus control and a second focus control by a method different from that of the first focus control, and an information output device which outputs information for causing a user to distinguish whether the first or second focus control is currently performed. The controller performs the second focus control after performing the first focus control, and the information output device outputs the information when the first focus control is performed and does not output the information when the second focus control is performed.

Abstract: When a face is detected from image signals, stability determination time is set for determining if the face is recognized in a stable manner, and a period of time for which the face is consecutively detected starts to be measured. Until the measured period of time exceeds the stability determination time, an AF evaluation value acquired from a normal frame set to include a face frame corresponding to the face is used to exercise TV-AF control. Once the measured time exceeds the stability determination time, TV-AF control is exercised based on AF evaluation values acquired from each of the face frame and the normal frame.

Abstract: An image pickup apparatus is disclosed which provides an appropriate inclination guide display in accordance with an aspect ratio of a picked-up image and the like. The image pickup apparatus includes an inclination detector which detects an inclination of the image pickup apparatus, a display device capable of superimposedly showing an inclination guide display corresponding to a detection output from the inclination detector, on a picked-up image, and an aspect ratio setter which sets the aspect ratio of a picked-up image. The apparatus includes a display controller which controls whether or not to show the inclination guide display on the display device on the basis of the aspect ratio set by the aspect ratio setter.

Abstract: In an image included in a moving image, a specific area is registered as a reference area, and a specific hue range of the reference area is set as a first feature amount based on the distribution of hues of pixels in the reference area. When the occupation ratio of pixels having hues included in a second feature amount, obtained by expanding the hue range of the first feature amount in a surrounding area larger than the reference area, is smaller than a predetermined ratio, an area having a high degree of correlation is identified from an image using the second feature amount in the subsequent matching process. When the occupation ratio is equal to or larger than the predetermined ratio, an area having a high degree of correlation is identified from an image using the first feature amount in the subsequent matching process.

Abstract: a When a face is detected from image signals, stability determination time is set for determining if the face is recognized in a stable manner, and a period of time for which the face is consecutively detected starts to be measured. Until the measured period of time exceeds the stability determination time, an AF evaluation value acquired from a normal frame set to include a face frame corresponding to the face is used to exercise TV-AF control. Once the measured time exceeds the stability determination time, TV-AF control is exercised based on AF evaluation values acquired from each of the face frame and the normal frame.

Abstract: In an image included in a moving image, a specific area is registered as a reference area, and a specific hue range of the reference area is set as a first feature amount based on the distribution of hues of pixels in the reference area. When the occupation ratio of pixels having hues included in a second feature amount, obtained by expanding the hue range of the first feature amount in a surrounding area larger than the reference area, is smaller than a predetermined ratio, an area having a high degree of correlation is identified from an image using the second feature amount in the subsequent matching process. When the occupation ratio is equal to or larger than the predetermined ratio, an area having a high degree of correlation is identified from an image using the first feature amount in the subsequent matching process.

Abstract: When a face is detected from image signals, stability determination time is set for determining if the face is recognized in a stable manner, and a period of time for which the face is consecutively detected starts to be measured. Until the measured period of time exceeds the stability determination time, an AF evaluation value acquired from a normal frame set to include a face frame corresponding to the face is used to exercise TV-AF control. Once the measured time exceeds the stability determination time, TV-AF control is exercised based on AF evaluation values acquired from each of the face frame and the normal frame.

Abstract: An image capturing apparatus performs autofocus control that uses a face detection function. The image capturing apparatus sets a face region as an AF frame if face detection is successful. However, if a state in which face detection is successful transitions to a state in which face detection has failed, and furthermore a variation between subject distances is less than or equal to a threshold value, the image capturing apparatus maintains the previous AF frame setting instead of changing the AF frame setting. If the variation in subject distances is greater than the threshold value, the image capturing apparatus sets the AF frame to a predetermined region that does not follow a face region.

Abstract: An image pickup apparatus capable of focusing on an object with stability based on a recognized object area. A video camera includes an image pickup device for picking up an image formed by an image-pickup optical system including a focus lens, a face detection processing circuit for detecting, based on a video signal output from the image pickup device, an object area on an imaging screen and the likelihood of an object being present in the object area, and a computer for controlling a focus adjustment based on the object area when determining that the likelihood detected by the face detection processing circuit satisfies a predetermined condition, which is varied according to an imaging state.

Abstract: A focus adjustment apparatus includes a detection unit configured to detect an object image to be focused from a captured image, a setting unit configured to set a focus detection region in the captured image, and a focus adjustment unit configured to adjust an in-focus state of an imaging optical system depending on AF evaluation values based on output signals from the focus detection region. First and second focus detection regions are set for a region which has followed the object image detected and a region which does not follow the object image detected. The focus adjustment unit performs a weighted addition of the AF evaluation values based on the output signals in the first and second focus detection regions at ratios depending on at least either a size of an object image within a screen, a position of the object image within the screen and a shooting mode.

Abstract: A focus adjustment apparatus comprises a detection unit that detects a subject/subjects having a predetermined characteristic from an image obtained while shooting a moving picture, a selection unit that, in the case where a subject/subjects having the predetermined characteristic have been detected by the detection unit, selects, from the detected subject/subjects, a subject that also fulfils a predetermined condition, and a focus adjustment unit that controls a focus lens to focus on the subject selected by the selection unit. The focus adjustment unit does not control the focus lens in the case where no subject having the predetermined characteristic has been detected by the detection unit.

Abstract: Inside an engine compartment of a vehicle, an ammonia concentration sensor is arranged above a liquid ammonia injector which is attached to an internal combustion engine body and to the rear in a direction of progression of the vehicle. An ammonia concentration which is detected by the ammonia concentration sensor is used as the basis to judge if ammonia is leaked.

Abstract: An image pickup apparatus is disclosed which provides an appropriate inclination guide display in accordance with an aspect ratio of a picked-up image and the like. The image pickup apparatus includes an inclination detector which detects an inclination of the image pickup apparatus, a display device capable of superimposedly showing an inclination guide display corresponding to a detection output from the inclination detector, on a picked-up image, and an aspect ratio setter which sets the aspect ratio of a picked-up image. The apparatus includes a display controller which controls whether or not to show the inclination guide display on the display device on the basis of the aspect ratio set by the aspect ratio setter.

Abstract: An image-pickup apparatus is disclosed which is capable of restricting unnecessary focus control by an AF method other than the TV-AF method in the hybrid AF. The image-pickup apparatus includes a first detector which generates first information corresponding to a contrast state of a picked-up image, a second detector which detects second information differing from the first information and used for focus control, and a controller which performs focus processing that cyclically repeats first focus control using the first information and performs second focus control using the second information. In the focus processing, the controller is changed over between a state of restricting the second focus control and a state of allowing the second focus control, depending on a change amount of the contrast state.

Abstract: In an image included in a moving image, a specific area is registered as a reference area, and a specific hue range of the reference area is set as a first feature amount based on the distribution of hues of pixels in the reference area. When the occupation ratio of pixels having hues included in a second feature amount, obtained by expanding the hue range of the first feature amount in a surrounding area larger than the reference area, is smaller than a predetermined ratio, an area having a high degree of correlation is identified from an image using the second feature amount in the subsequent matching process. When the occupation ratio is equal to or larger than the predetermined ratio, an area having a high degree of correlation is identified from an image using the first feature amount in the subsequent matching process.

Abstract: In one image included in a moving image, a specific area is registered as a reference area, and a feature amount of the reference area is set based on the saturation and hue distributions of pixels in the reference area. At this time, when a value calculated from the saturations in the reference area is equal to or smaller than a threshold, the feature amount is set to have a lower resolution of the hue distributions in the reference area than a case in which the value is larger than the threshold. By deciding a position corresponding to the feature amount of the reference area in a frame image after the image including the reference area by a matching process, the reference area is tracked. Then, an object in a specific area can be stably tracked in a moving image.

Abstract: An image pickup apparatus is disclosed which provides an appropriate inclination guide display in accordance with an aspect ratio of a picked-up image and the like. The image pickup apparatus includes an inclination detector which detects an inclination of the image pickup apparatus, a display device capable of superimposedly showing an inclination guide display corresponding to a detection output from the inclination detector, on a picked-up image, and an aspect ratio setter which sets the aspect ratio of a picked-up image. The apparatus includes a display controller which controls whether or not to show the inclination guide display on the display device on the basis of the aspect ratio set by the aspect ratio setter.