Abstract: A non-transitory computer-readable recording medium having stored therein a line of sight detection program for causing a computer to execute a process, the process includes finding an index indicating a variation of a line of sight of an observer who observes an object based on a difference between line of sight data of a left eye of the observer and line of sight data of a right eye of the observer, determining a stay of the line of sight of the observer based on the index, and resolving a line of sight position of the observer based on a result of the determination on the stay.

Abstract: A procedure includes calculating a position of a line of sight of a user in a display screen of a display device, based on information on an eyeball portion of the user included in an input image, setting a processing target region which is a target region of processing corresponding to an input operation by a line of sight and an operation region which is adjacent to the processing target region and is for receiving the input operation by the line of sight, in the display screen, based on the position of the line of sight and information on a field of view of the user, and creating screen data in which image information within the processing target region is included in image information within the operation region and which is to be displayed on the display device.

Abstract: A non-transitory computer-readable recording medium having stored therein a line of sight detection program for causing a computer to execute a process, the process includes finding an index indicating a variation of a line of sight of an observer who observes an object based on a difference between line of sight data of a left eye of the observer and line of sight data of a right eye of the observer, determining a stay of the line of sight of the observer based on the index, and resolving a line of sight position of the observer based on a result of the determination on the stay.

Abstract: A pointing support device detects user's gaze position on a screen, sets the gaze position as an initial position of a pointer, displays a path starting from the initial position on the screen on the basis of path definition information, which defines the path to move the pointer and a movement pattern of the path and moves the pointer along the path.

Abstract: A pointing support apparatus includes a memory, and a processor coupled to the memory and configured to detect a line-of-sight position of a user on a screen, extract a command included in a search range of the screen with reference to the line-of-sight position, generate a table in which the command and speech information of the command are associated with each other, and decide, when speech information from outside is accepted, a command based on comparison of the recognized speech information and the speech information of the table.

Abstract: A procedure includes calculating a position of a line of sight of a user in a display screen of a display device, based on information on an eyeball portion of the user included in an input image, setting a processing target region which is a target region of processing corresponding to an input operation by a line of sight and an operation region which is adjacent to the processing target region and is for receiving the input operation by the line of sight, in the display screen, based on the position of the line of sight and information on a field of view of the user, and creating screen data in which image information within the processing target region is included in image information within the operation region and which is to be displayed on the display device.

Abstract: An arousal-level determining apparatus includes a generating unit, a calculating unit, an identifying unit, and a determining unit. The generating unit generates heartbeat-interval variation data, which indicates changes in heartbeat interval, on the basis of heartbeat signals indicating subject's heartbeats. The calculating unit applies a band-pass filter, which allows passage of a certain range of frequencies, to each frequency band in the heartbeat-interval variation data while changing the frequency band, and calculates spectral density with respect to each frequency band applied with the band-pass filter. The identifying unit identifies a feature point corresponding to a spectral density peak in the calculated spectral densities in the frequency bands. The determining unit determines subject's arousal level on the basis of the identified feature point.

Abstract: A pointing support apparatus includes a memory, and a processor coupled to the memory and configured to detect a line-of-sight position of a user on a screen, extract a command included in a search range of the screen with reference to the line-of-sight position, generate a table in which the command and speech information of the command are associated with each other, and decide, when speech information from outside is accepted, a command based on comparison of the recognized speech information and the speech information of the table.

Abstract: An image processing apparatus including a detection unit configured to detect a face area and an eye area from images that are sequentially input; a motion vector calculation unit configured to calculate, between two of the images, a first motion vector in the face area and second motion vectors in a plurality of blocks obtained by dividing the eye area; a similarity calculation unit configured to calculate, for each pair of the images, a value relevant to a similarity between the first motion vector and each of the second motion vectors; and a determination unit configured to determine whether blinking has occurred based on the value relevant to the similarity.

Abstract: A pointing support device detects user's gaze position on a screen, sets the gaze position as an initial position of a pointer, displays a path starting from the initial position on the screen on the basis of path definition information, which defines the path to move the pointer and a movement pattern of the path and moves the pointer along the path.

Abstract: An image processing device includes a processor; and a memory which stores a plurality of instructions, which when executed by the processor, cause the processor to execute: determining whether or not an eye region of a user being detected a line-of-sight in an image resulting from photographing an eye of the user is influenced by reflection light, the eye region being a region of the eye; and detecting, as a feature portion of the eye, a region that is included in the eye region and that includes a pixel having a feature that is the same as or similar to any of features of the feature portion, when it is determined that the eye region is influenced by the reflection light, the features being accumulated for respective strengths of influences of the reflection light that appear in images of the feature portion of the eye.

Abstract: An image processing device includes a processor; and a memory which stores a plurality of instructions, which when executed by the processor, cause the processor to execute: determining whether or not an eye region of a user being detected a line-of-sight in an image resulting from photographing an eye of the user is influenced by reflection light, the eye region being a region of the eye; and detecting, as a feature portion of the eye, a region that is included in the eye region and that includes a pixel having a feature that is the same as or similar to any of features of the feature portion, when it is determined that the eye region is influenced by the reflection light, the features being accumulated for respective strengths of influences of the reflection light that appear in images of the feature portion of the eye.

Abstract: An awakening-degree determining device according to the present embodiment acquires heartbeat signal data on the subject from a heartbeat detecting unit and detects heartbeat interval data. The awakening-degree determining device calculates the power spectral density that corresponds to each frequency by using the heartbeat interval data, calculates a peak P and a bottom B, and calculates a state index S. Then, the awakening-degree determining device plots the movement of the state index on an awakening-degree determination graph and determines the degree of awakening of the subject on the basis of the position of the state index S.

Abstract: An arousal-level determining apparatus includes a generating unit, a calculating unit, an identifying unit, and a determining unit. The generating unit generates heartbeat-interval variation data, which indicates changes in heartbeat interval, on the basis of heartbeat signals indicating subject's heartbeats. The calculating unit applies a band-pass filter, which allows passage of a certain range of frequencies, to each frequency band in the heartbeat-interval variation data while changing the frequency band, and calculates spectral density with respect to each frequency band applied with the band-pass filter. The identifying unit identifies a feature point corresponding to a spectral density peak in the calculated spectral densities in the frequency bands. The determining unit determines subject's arousal level on the basis of the identified feature point.

Abstract: An image processing apparatus including a detection unit configured to detect a face area and an eye area from images that are sequentially input; a motion vector calculation unit configured to calculate, between two of the images, a first motion vector in the face area and second motion vectors in a plurality of blocks obtained by dividing the eye area; a similarity calculation unit configured to calculate, for each pair of the images, a value relevant to a similarity between the first motion vector and each of the second motion vectors; and a determination unit configured to determine whether blinking has occurred based on the value relevant to the similarity.

Abstract: A processor generates a prediction error by predicting a pixel value of a prediction-target pixel in a compression-target image, and predicts a code amount of compression code for a compression-target line in the compression-target image. According to the predicted code amount and a code amount of compression code for one or more compressed lines, the processor determines which of lossless compression and lossy compression is to be applied to the compression-target line. When the processor determines that lossless compression is to be applied, the processor generates the compression code for the compression-target line by compressing a prediction error for each compression-target pixel in the compression-target line via lossless compression.

Abstract: When a periodic pattern is not included in image data 210, a prediction error encoding unit 204 outputs the variable-length code of a prediction error quantization value 214 generated by prediction encoding as compressed data 215. When the periodic pattern is included in the image data 210, a periodic pattern encoding unit 208 outputs only information about the periodic pattern as the compressed data 215, while the output of the prediction error encoding unit is stopped. On the decompression side, while the copy instruction of a pixel value before one cycle from the compressed data is not detected, the decompression operation in a normal prediction encoding system is executed. When the instruction is detected, the pixel value one cycle before, internally stored is copied and outputted.

Abstract: A document conversion and use system which converts a first structured document into a second structured document different in structure from the first structured document, comprising: a template storage unit storing a template indicating the structure of the second structured document; a structure specification unit for reading out the template from the template storage unit and causing a user to specify an element or an element content constituting the template; a correspondence definition specification unit for causing the user to define the correspondence definition specification indicating the correspondence between the element in the first structured document and the element in the template; and an unit for analyzing the template structure to specify the element or the element content specified by the structure specification unit, searching for the element defined by the correspondence definition starting from the element or the element content, and performing conversion processing according to the sear

Abstract: An image compression apparatus includes: a line memory unit for holding pixel values for at least one immediately previous line in the lines to be processed of an image to be compressed; a division unit for dividing pixels of the line to be processed into 2n-pixel blocks; a first estimation value calculation unit for extrapolation-estimating the 2n-1-th pixel and the 2n-th pixel in the blocks divided, and obtaining an estimated value in processing for the first hierarchical level; a second estimation value calculation unit for interpolation-estimating certain pixels and obtaining an estimated value in the processing for the second hierarchical level through the processing for the n-th hierarchical level; and an estimation coding unit for obtaining an estimation error from the estimated value, converting the estimation error into a quantization number, converting the quantization number into a variable length code, and obtaining a compression code.

Abstract: A compression device using a prediction coding method performs a prediction for one line in an image to be compressed by using each of a plurality of the same types of predictors as plural types of predictors, and determines one quantizer out of plural types of quantizers based on a prediction error amount of a predictor having the smallest prediction error. It also performs a prediction for a prescribed pixel block in the one line, and identifies one predictor out of the plural types of predictors based on a type of a predictor having the smallest prediction error. Then, it compresses data of the prescribed pixel block by using the identified predictor and the determined quantizer. A decompression device decompresses the compressed image data to generate the image to be compressed by using an inverse quantizer corresponding to the determined quantizer and the identified predictor.