Abstract: A document camera has an image processing apparatus, which acquires the contour of an image of an original by means of a Roberts filter. The image processing apparatus detects straight lines as candidates for forming an image of the original from the acquired contour and acquires the shape of a quadrangle of the original. The image processing apparatus determines the projection parameters showing the relationship between the shape of the image of the original and the shape of the actual original from the positions of the corners of the quadrangle and executes an operation of projection/transformation on the image of the original. The document camera outputs the image data of the image to a projector, which projects an image of the original on a screen according to the image data.

Abstract: An imaging apparatus includes: an imaging section configured to acquire a plurality of images that are consecutively taken in time series by an imaging device; a reference region setting section configured to employ one of the images acquired by the imaging section as a reference image and to set a region of the reference image as reference region, the region having high-frequency components; and an image processing section configured to combine the images including the reference image by positioning the images so as to overlap subject portions in each images, the subject portions being defined in the reference region set by the reference region setting section.

Abstract: An imaging apparatus includes: an imaging section configured to output a first set of digital images; a section generating a plurality of sets of one-dimensional data from each of digital images respectively based on an object movement direction representing a movement direction of a moving object; a section configured to detect object regions for each of the digital images respectively based on the respective sets of the one-dimensional data; a section configured to select a second set of digital images from among the first set based on the object regions; a section configured to generate a background image from the second set of digital images; and a section configured to generate a stroboscopic image by combining the background image and a plurality of object images corresponding to the object regions of the second set of digital images.

Abstract: An imaging apparatus, including: an imaging section for sequentially taking an image of an object and sequentially generating image data of the object; a dividing section for dividing the image data of the object into image data corresponding to each of a plurality of image areas; a first calculating section for calculating an evaluated value of each of the divided plurality of image areas by evaluating a pixel value of each of the pixels included in each of the divided plurality of image areas; a second calculating section for calculating a correlation degree of the image areas respectively corresponding to the images based on the evaluated value of each of the image areas calculated by the first calculating section; and a first controlling section for controlling execution of storing the image data of the object based on the correlation degree of the image areas calculated by the second calculating section.

Abstract: A computer obtains a change amount of an image of a manuscript. If the change amount of the image of the manuscript is equal to or larger than a predetermined threshold, the computer determines that the image has movement, such as in a case where the manuscript is replaced, and switches the resolution of the image, which is possible to shorten the processing time, to low resolution. In a case where the manuscript is placed on a base, if the change amount of the image of the manuscript is less than the predetermined threshold, and the computer determines that the image does not have movement, the computer switches the resolution of the image to high resolution.

Abstract: As shown in FIG. 2B, a photographing area is divided into a plurality of blocks. The block at the center of the photographing area is defined as an observation block 31, and the blocks at the periphery of the photographing area are defined as background blocks 32. When the number of background blocks 32 having the largest number of identical motion vectors is larger than a threshold m, when the scalar quantity of the motion vectors of these background blocks 32 with the largest number is larger than a threshold v, and when the scalar quantity of the motion vector of the observation block 31 is smaller than a threshold vc, the digital camera 1 judges that the user is performing a follow shot and there is no blurring of the observed photographic subject, and performs an automatic shooting.

Abstract: Dots (14) are marked on the stage surface of a stage (13) beforehand, and when an original (5) is placed on that stage, a document camera (1) acquires stage specification information such as the number of pixels of an image of the dot (14) and that of a check area (82) of the image thereof, based on the resolution of a shot image obtained by shooting. Based on the acquired stage specification information, the document camera (1) identifies an area of an image of the stage (13), acquires a binarized image which represents the area of the image of the stage (13) in white, so that a boundary between an area of an image of the original (5) and the area of the image of the stage (13) becomes clarified. Based on the binarized image, the document camera (1) determines the outline of the image of the original (5), and acquires the image thereof.

Abstract: A digital camera has a CPU and an image processing apparatus. The image processing apparatus acquires a contour from an image acquired by shooting a whiteboard as a shooting target by using a Roberts filter. The image processing apparatus detects straight lines to be candidates which form the image of the whiteboard from the acquired contour, and acquires the rectangular shape of the whiteboard. The image processing apparatus acquires projection parameters indicating the relationship between the image of the whiteboard and the real whiteboard from vertex positions of the quadrangle, and performs projection transformation of the image of the whiteboard.

Abstract: A photographing unit photographs an object “n” times respectively with exposure times T1(1) to T1(n) to generate “n” sheets of images of the same object per an exposure time T1, where “n” is a whole number and the exposure times T1(1) to T1(n) are obtained by dividing the exposure time T1 by the whole number of “n”, a displacement correcting unit (32a, 32b) calculates a correction value for correcting displacement of the images, and a limb-darkening compensating unit (32d) corrects a position of a limb-darkening characteristic component of each of the images, using the correction value. Meanwhile, the limb-darkening characteristic components of the images whose positions have been corrected are combined to generate a limb-darkening characteristic component for compensation. Limb darkening in a combined image is compensated for, using the limb-darkening characteristic component for compensation, whereby a time required for performing a limb-darkening compensating process is decreased.

Abstract: When a user instructs photographing by operating an operating unit, an image captured by an image sensor is stored as a photographed image in a memory. When a mode for performing color fading correction is set, the CPU instructs an image processing device to extract, from the photographed image, areas in which there are photographic print images which are supposed to bring about color fading. The image processing device generates a binary image by detecting edges of the photographed image, erases edges contacting an outermost edge of the photographed image, and extracts the areas based on the binary image from which some of the edges are erased.

Abstract: When a user instructs photographing by operating an operating unit, an image captured by an image sensor is stored as a photographed image in a memory. When a mode for performing color fading correction is set, the CPU instructs an image processing device to extract, from the photographed image, an area which is supposed to bring about color fading. The image processing device generates a binary image by detecting edges of the area.

Abstract: Dots (14) are marked on the stage surface of a stage (13) beforehand, and when an original (5) is placed on that stage, a document camera (1) acquires stage specification information such as the number of pixels of an image of the dot (14) and that of a check area (82) of the image thereof, based on the resolution of a shot image obtained by shooting. Based on the acquired stage specification information, the document camera (1) identifies an area of an image of the stage (13), acquires a binarized image which represents the area of the image of the stage (3) in white, so tat a boundary between an area of an image of the original (5) and the area of the image of the stage (13) becomes clarified. Based on the binarized image, the document camera (1) determines the outline of the image of the original (5), and acquires the image thereof.

Abstract: A digital camera acquires the image of an original including an original from a shot image acquired by shooting. The digital camera reduces the image of the original and corrects distortion of the reduced image which is originated from the characteristic of a lens. As the digital camera performs distortion correction on the reduced image, the number of arithmetic operations in distortion correction is reduced, making distortion correction simpler. The digital camera acquires a rectangle defined by the contour of the original, extracts the image of the original to acquire an original image before reduction, and acquires an associated projection-transformed image by affine transformation. The digital camera acquires pixel positions of the original image using an affine parameter, and acquires pixel positions of the image before distortion correction using a relational expression of distortion correction performed on the reduced image.

Abstract: A document camera has an image processing apparatus, which acquires the contour of an image of an original by means of a Roberts filter. The image processing apparatus detects straight lines as candidates for forming an image of the original from the acquired contour and acquires the shape of a quadrangle of the original. The image processing apparatus determines the projection parameters showing the relationship between the shape of the image of the original and the shape of the actual original from the positions of the corners of the quadrangle and executes an operation of projection/transformation on the image of the original. The document camera outputs the image data of the image to a projector, which projects an image of the original on a screen according to the image data.

Abstract: A digital camera has a CPU and an image processing apparatus. The image processing apparatus acquires a contour from an image acquired by shooting a whiteboard as a shooting target by using a Roberts filter. The image processing apparatus detects straight lines to be candidates which form the image of the whiteboard from the acquired contour, and acquires the rectangular shape of the whiteboard. The image processing apparatus acquires projection parameters indicating the relationship between the image of the whiteboard and the real whiteboard from vertex positions of the quadrangle, and performs projection transformation of the image of the whiteboard.

Abstract: A computer obtains a change amount of an image of a manuscript. If the change amount of the image of the manuscript is equal to or larger than a predetermined threshold, the computer determines that the image does not have movement, such as in a case where the manuscript is replaced, and switches the resolution of the image, which is possible to shorten the processing time, to low resolution. In a case where the manuscript is placed on a base, if the change amount of the image of the manuscript is less than the predetermined threshold, and the computer determines that the image does not have movement, the computer switches the resolution of the image to high resolution.