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    一种车联网中基于无证书群签名的匿名认证方法

    KR07603615A
    发明人
    郑远攀, 李广阳, 王泽宇, 陈广玉, 陈燕, 张云翼, 刘新新
    受让人
    郑州轻工业大学
    申请人
    Desmond Mascarenhas
    申请号
    501004
    申请日
    2002-12-11
    公开(公告)号
    KR07603615A
    公开(公告)日
    1995-12-04
    IPC分类号
    E05D015/00E05D015/06E06B003/46E06B003/48E06B003/70E06B007/16E06B003/32E05D000/00E05D015/26E06B007/22
    CPC分类号
    -
    优先权号
    2020212733
    优先权日
    2020-12-21
    摘要

    An image scanner in which in scanning an image of a document placed on a scanner body, an image scanning device moves and scans the image of the document. In scanning an image of a document fed by a document feeder to the scanner body, the image scanning device moves to a predetermined scanning position and then scans the image of the document in the scanning position. When the image scanning device arrives at the scanning position, the image scanning device is pressed against a stopper that is positioned relative to the document feeder.

    权利要求
    1 . A method for facilitating communications using application programming interfaces (“APIs”), the method comprising: receiving, by control circuitry, an application programming interface (“API”) request for interpreting a command, wherein the API request includes an image of a user interface as displayed on a display screen when the command was received; caching, by the control circuitry, the image in the API request; determining, by the control circuitry, a command response based on the command and the image; generating an API response based on the command response; and transmitting the API response.
    2 . The method of claim 1 , wherein determining the command response based on the command and the image further comprises: determining an object in the image; determining a context for the user interface based on the object; and customizing the command response based on the context.
    3 . The method of claim 2 , wherein the object in the image is determined by: determining boundaries of objects in the image; matching the boundaries of objects to a user interface template of a plurality of user interface templates, wherein each of the plurality of user interface templates corresponds to a respective context; and determining the context for the user interface based on the respective context for the user interface template.
    4 . The method of claim 1 , wherein determining the command response based on the command and the image further comprises: determining an object in the image; determining a position of the object in the user interface; and customizing the command response based on the position.
    5 . The method of claim 1 , wherein determining the command response based on the command and the image further comprises: determining an object in the image; determining a word corresponding to the object in the user interface; and customizing the command response based on the word.
    6 . The method of claim 1 , wherein determining the command response based on the command and the image comprises interpreting the command based on an object in the image.
    7 . The method of claim 1 , wherein the command is a vocal search command, and the API request is for a voice recognition application.
    8 . The method of claim 1 , further comprising transmitting, by the control circuitry, the API request from a first device to a second device.
    9 . (canceled)
    10 . The method of claim 1 , wherein the image is captured prior to modifying the user interface in response to the command.
    11 . A system for facilitating communications using application programming interfaces (“APIs”), the system comprising: control circuitry configured to: receive an application programming interface (“API”) request for interpreting a command, wherein the API request includes an image of a user interface as displayed on a display screen when the command was received; cache the image in the API request; determine a command response based on the command and the image; and generate an API response based on the command response; and output circuitry configured to transmit the API response.
    12 . The system of claim 11 , wherein the control circuitry is further configured to: determine an object in the image; determine a context for the user interface based on the object; and customize the command response based on the context.
    13 . The system of claim 12 , wherein the control circuitry is further configured to: determine boundaries of objects in the image; match the boundaries of objects to a user interface template of a plurality of user interface templates, wherein each of the plurality of user interface templates corresponds to a respective context; and determine the context for the user interface based on the respective context for the user interface template.
    14 . The system of claim 11 , wherein the control circuitry is further configured to: determine an object in the image; determine a position of the object in the user interface; and customize the command response based on the position.
    15 . The system of claim 11 , wherein the control circuitry is further configured to: determine an object in the image; determine a word corresponding to the object in the user interface; and customize the command response based on the word.
    16 . The system of claim 11 , wherein determining the command response based on the command and the image comprises interpreting the command based on an object in the image.
    17 . The system of claim 11 , wherein the command is a vocal search command, and the API request is for a voice recognition application.
    18 . The system of claim 11 , wherein the API request is received, by a second device, from a first device.
    19 . (canceled)
    20 . The system of claim 11 , wherein the image is captured prior to modifying the user interface in response to the command.
    21 - 50 . (canceled)
    51 . The method of claim 1 wherein the API response is customized based on the image.
    52 . The system of claim 11 wherein the API response is customized based on the image.
    说明书
    [0001]BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a stereoscopic camera comprising means to facilitate the adjustment of its optomechanical parameters by an operator. [0003] 2. Description of the Prior Art [0004] A stereoscopic camera simultaneously films two views of the same scene, a left view and a right view, so as to obtain relief images of the scene. To this end, it generally comprises two cameras, called 2D cameras, each delivering images in two dimensions corresponding respectively to a left view and a right view of the scene filmed. The adjustment of a stereoscopic camera consists in adjusting the optomechanical parameters of each of the 2D cameras and the parameters fixing the position of the 2D cameras one with respect to the other. This consists, for example, in adjusting the distance separating the two 2D cameras, the angle between the axes of the two 2D cameras, (commonly called the convergence angle), the focal length and the focus of the two 2D cameras. [0005] The parameters are adjusted one after the other. Adjustment of a parameter consists in altering the value of the parameter in question until obtaining the best result. The adjustment is carried out roughly by the operator depending on his needs. Since the adjustment of each parameter affects the other parameters, the adjustment operation is often very lengthy. In addition, it is often very difficult to go backwards, when, after modifying several parameters, the operator considers that the earlier adjustments would be more suitable. SUMMARY OF THE INVENTION [0006] The aim of the invention is to facilitate the adjustment of the optomechanical parameters of a stereoscopic camera. [0007] To this end, the invention is a stereoscopic camera comprising first and second cameras intended to generate first and second sequences of images, respectively, each image of the said first sequence being associated with an image of the said second sequence, means to display a sequence of stereoscopic images from the said first and second sequences of images, first storage means in order to store respectively at least one image of the said first sequence of images and the associated image of the said second sequence of images, and first selection means placed upstream of the display means in order to selectively supply to the said display means either the said at least one stored image of the said first sequence of images and the associated stored image of the said second sequence of images, or the said first and second sequences of images coming from the said first and second cameras. [0008] With this stereoscopic camera, it is then possible to store at least one stereoscopic image and to be able to display either the current stereoscopic image or the stored stereoscopic image. The aim of this form of embodiment is to facilitate comparison between the two images. In this way, before each operation of adjusting the parameters of the stereoscopic camera, a stereoscopic image is stored in the first and second storage means. Then, after altering at least one of the adjustment parameters, the adjustment thus obtained can be evaluated by comparing the current stereoscopic image with the stored stereoscopic image. [0009] According to a variant, the stereoscopic camera also makes it possible to assess the connection between a current stereoscopic image and a stored stereoscopic image corresponding, for example, to a previous scene. In order to do this, the stereoscopic camera may also comprise first and second inputs in order to receive respectively third and fourth sequences of images coming from a piece of equipment external to the said stereoscopic camera, and second selection means in order to selectively supply to the said first storage means either the said first and second sequences of images coming from the said first and second cameras, or the said third and fourth sequences of images coming from the said external piece of equipment. [0010] In order to facilitate the return to previous adjustments, it is possible to store values representative of the adjustment parameters of the first and second cameras. To this end, the stereoscopic camera may comprise a second storage means.
    [0002]BRIEF DESCRIPTION OF THE SOLE FIGURE [0011] The characteristics of the invention mentioned above will appear clearer on reading the following description, made in relation to the single FIGURE which represents a form of embodiment of a stereoscopic camera according to the invention.
    [0003]DETAILED DESCRIPTION OF THE INVENTION [0012] In the single FIGURE, a stereoscopic camera comprising two 2D cameras, referenced 10 and 11, is considered. They generate respectively first and second digital image sequences in two dimensions. The camera 10 films, for example, a left view of the scene to be filmed and the camera 11, a right view. Two control signals, denoted C1 and C2, are provided in order to control these two cameras. The control signals are delivered by a control circuit referenced 19. The stereoscopic camera also comprises two inputs, referenced 12 and 13, in order to receive respectively the third and fourth sequences of images delivered by an external piece of equipment 30, for example a video recorder or a hard disk. The images of the said third and fourth sequences relate, for example, to a scene filmed previously by the cameras 10 and 11, respectively. A selection means, referenced 15, is used in order to select either the first and second sequences of images, or the third and fourth sequences of images. This selection means is controlled by a control signal denoted C3 supplied by the control circuit 19. Normally, the two sequences selected are then transmitted to a stereoscopic display means, referenced 14, which then generates a sequence of stereoscopic images from these two sequences. The display means 14 is, for example, a pair of glasses with an LCD screen. [0013] According to the preferred embodiment, two storage circuits, denoted 16 and 17, are provided in order for each one to store at least one digital image coming from the selection means 15. In the example illustrated, the storage circuit 16 is provided in order to store a digital image of the sequence coming either from the camera 10, or from the input 12 and the storage circuit 17 is itself placed in order to store either an image of the sequence coming from the camera 11, or from the input 13. The memory space needed to store a stereoscopic digital image is about 1.6 Mb for a single definition standard (PAL standard, for example). A control signal C4 is provided in order to simultaneously control the storage circuits 16 and 17. Finally, a second selection means 18 is provided in order to select the digital images to supply to the stereoscopic display means 14. This selection means is controlled by a control signal C5. This selection means outputs either the images coming from the storage circuits 16 and 17, or the images selected by the selection means 15. [0014] With such a stereoscopic camera, it is thus possible to store images coming either from cameras 10 and 11, or from the external piece of equipment 30. [0015] At the time of filming a scene, the operator can display the current scene filmed by the cameras 10 and 11, and compare it with a scene stored previously in the storage circuits 16 and 17. The selection means 18 is then used to switch between the two scenes. The operator can then compare the two scenes and act on the controls of the stereoscopic camera in order to adjust the parameters of the camera according to his needs. Note that, in order that the comparison of two images is conclusive, it is necessary that the images compared are of the same quality. It is therefore preferable that the images stored in the circuits 16 and 17 are not compressed. [0016] Of course, the means of the invention can be used in a camera with multiple views comprising n 2D cameras. In this case, the camera then comprises n storage circuits. [0017] Advantageously, the stereoscopic camera also comprises an additional storage circuit 20 in order to store values of control signals C1 and C2 of cameras 10 and 11, the stored signals C1 and C2 corresponding to a given adjustment of the stereoscopic camera. Thus, before altering the optomechanical parameters of the camera, the operator stores the control signals corresponding to a starting adjustment. He may then alter the value of these parameters in order to try to improve the adjustment. If he considers that the new adjustment is less beneficial than the starting adjustment, the operator can then recover the stored signals C′1 and C′2 which correspond to the starting adjustment. Advantageously, the storage circuit 20 stores all the signals sent to the cameras 10 and 11 which may correspond to the values of many parameters such as the distance between the cameras 10 and 11, the angle between the axes of the cameras 10 and 11, the focal length, the focus and the gain or the aperture of the iris of cameras 10 and 11.
    同族专利
    暂无同族专利