CN115187452A - Image processing method and device - Google Patents
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Abstract
The invention relates to the technical field of image processing, in particular to an image processing method and device, wherein the device comprises the following steps: the image acquisition unit is used for acquiring the content of the file image and sending the image content to the image processing unit; the image processing unit is used for carrying out primary processing on the acquired image content and sending the acquired image information to the central control unit after the processing is finished; the central control unit is used for receiving the image information sent by each unit and adjusting the corresponding operating parameters of each unit to corresponding values according to the received image information; the image adjusting unit is used for adjusting parameters corresponding to the image; and the file turning unit is connected with the central control unit and is used for receiving the instruction signal of the central control unit and performing page turning operation on the multi-page files according to the instruction signal. The invention realizes the accurate monitoring of the definition and the deformation degree of the images of the multi-page files, the balance of the image acquisition quality and the image acquisition efficiency and the improvement of the image quality.
Description
Technical Field
The present invention relates to the field of image processing technologies, and in particular, to an image processing method and apparatus.
Background
When taking a picture of a book or a document having a plurality of pages, due to external factors and problems of the image processing apparatus itself, there may be cases where the quality of image acquisition and the sharpness of the image do not meet the requirements, and there may be cases where the image is distorted.
Chinese patent publication No.: CN102271207A. Provided are an image processing device, an image forming system, a computer program, and an image display method, which can improve visibility when displaying a preview of a document image before printing. A preview image generation unit (13) acquires print data and generates a plurality of preview images. A display control unit (181) superimposes the plurality of generated preview images in page order and displays two adjacent preview images in the front row. A reverse display control means (182) turns one preview image in the front row gradually page-wise and reverses the front and back of the page to become the other preview image in the front row. As can be seen, the image processing apparatus, the image forming system, the computer program, and the image display method have problems of insufficient accurate monitoring of the degree of image sharpness and image deformation of a plurality of pages of documents, insufficient balance of image acquisition quality and acquisition efficiency, and low image quality.
Disclosure of Invention
Therefore, the invention provides an image processing method and an image processing device, which are used for overcoming the problems of insufficient accurate monitoring of the definition and the deformation degree of an image of a multi-page document, insufficient balance of image acquisition quality and acquisition efficiency and lower image quality in the prior art.
To achieve the above object, the present invention provides an image processing apparatus comprising: the image acquisition unit is used for acquiring the content of the file image and sending the image content to the image processing unit; the image processing unit is connected with the image acquisition unit and is used for carrying out primary processing on the acquired image content and sending the acquired image information to the central control unit after the processing is finished; the central control unit is respectively connected with the image acquisition unit, the image processing unit, the image adjusting unit and the file turning unit and is used for receiving the image information sent by each unit and adjusting the corresponding operating parameters of each unit to corresponding values according to the received image information; the image adjusting unit is connected with the central control unit and is used for adjusting parameters corresponding to the images; and the file turning unit is connected with the central control unit and is used for receiving the instruction signal of the central control unit and performing page turning operation on the multi-page files according to the instruction signal.
Further, the central control unit is provided with a preset image detection period T0 and a preset first image definition E1, when the device runs, the central control unit detects whether the image deformation condition exists in the image in the display terminal in the single preset image detection period T0 detected by the visual detector arranged in the display terminal, acquires the definition E of the image and preliminarily judges whether the image is qualified or not according to whether the image deformation condition exists and the definition E,
if the image deformation condition exists or E is less than E1, the central control unit judges that the image is unqualified, calculates the difference value delta E between the actual definition of the image and the definition of a preset image, adjusts the illumination inclination angle to a corresponding value according to the delta E, and sets delta E = E1-E;
if the image deformation condition does not exist and E is larger than or equal to E1, the central control unit judges that the image is qualified and continues to periodically detect the image.
Further, the central control unit is provided with a preset first image definition difference delta E1, a preset second image definition difference delta E2, a preset first illumination inclination angle adjusting coefficient gamma 1, a preset second illumination inclination angle adjusting coefficient gamma 2 and a preset illumination inclination angle C0, wherein delta E1 is smaller than delta E2, gamma 1 is larger than 0 and smaller than gamma 2, the central control unit adjusts the illumination inclination angle according to the difference delta E between the actual image definition and the preset image definition when the central control unit finishes the judgment of whether the illumination intensity and the illumination inclination angle are adjusted and the actual image definition E meets the requirement that E is smaller than E1,
if the delta E is less than or equal to the delta E1, the central control unit adjusts the illumination inclination angle to be C0;
if the delta E1 is less than the delta E and less than or equal to the delta E2, the central control unit adjusts the illumination inclination angle by using gamma 2;
if delta E is > -delta E2, the central control unit adjusts the illumination inclination angle by using gamma 1;
when the central control unit adjusts the illumination inclination angle C0 of the light supplement device by using γ i, i =1,2 is set, the adjusted illumination inclination angle is marked as C ', C ' = C0 × γ i is set, and when the central control unit adjusts the initial illumination inclination angle of the light supplement device to C ', the central control unit controls the visual detector to perform secondary detection on the image definition in the next detection period.
Further, the central control unit secondarily detects the definition of the image when the adjustment of the illumination inclination angle is completed and determines whether to adjust the shutter speed of the image acquisition unit according to the secondarily detected definition E' of the image,
if E' is less than or equal to E1, the central control unit judges that the image definition detected secondarily is lower than the allowable range and sends out equipment fault notification;
if E1 is more than E ' and less than or equal to E2, the central control unit judges that the image definition detected secondarily is lower than an allowable range, calculates the difference delta E ' between the image definition detected secondarily and the preset image definition, adjusts the page turning speed to a corresponding value according to the delta E ', and sets delta E ' = E ' -E1;
if the definition of the image detected twice is larger than the definition of the image detected twice, the central control unit controls the visual detector to detect whether the image has a deformation area or not, and judges whether the page turning speed of the file page turning unit is adjusted or not according to the detection result.
Further, the central control unit is provided with a preset third image definition difference delta E3', a preset fourth image definition delta E4', a preset first shutter speed adjusting coefficient beta 1, a preset second shutter speed adjusting coefficient beta 2 and a preset shutter speed V0, wherein delta E3' <deltaE 4',1 < beta 2, the central control unit adjusts the shutter speed according to the difference delta E ' between the image definition detected twice and the preset image definition when the central control unit finishes the judgment of whether the page turning speed is adjusted or not,
if the delta E 'is less than or equal to the delta E3', the central control unit judges that the difference value between the image definition of the secondary detection and the preset image definition is in an allowable range and adjusts the shutter speed to be V0;
if delta E3' is less than delta E ' and less than or equal to delta E4', the central control unit judges that the difference value between the image definition of secondary detection and the preset image definition exceeds an allowable range, and adjusts the shutter speed by using beta 1, the adjusted shutter speed is recorded as V1, and V1= beta 1 × V0 is set;
if delta E '> [ delta E4', the central control unit judges that the difference value between the image definition detected secondarily and the preset image definition exceeds an allowable range, adjusts the shutter speed by using beta 2, marks the adjusted shutter speed as V2, and sets V2= beta 2 xV 0.
Furthermore, the central control unit is provided with a preset page turning speed G0, the central control unit judges whether the page turning speed of the file page turning unit needs to be adjusted according to the image deformation condition detected by the visual detector when the judgment on the image definition and the adjustment on the shutter speed are finished and the definition E' of the secondarily detected image is greater than E2,
if the image deformation area is a boundary marking area and is not crossed with the content of the file, the central control unit judges that the page turning speed of the file page turning unit is not adjusted;
if the image deformation area is a non-boundary scribing area, the central control unit controls the visual detector to detect the area of the image deformation area, calculates the proportion of the image deformation area according to the detected area of the image deformation area and adjusts the page turning speed of the file page turning unit to a corresponding value according to the calculation result;
and if the image deformation area is a boundary scribing area and is intersected with the file content, the central control unit judges that the page turning speed of the file page turning unit is adjusted to G0.
Further, the central control unit is provided with a preset first image deformation area ratio D1 and a preset second image deformation area ratio D2, wherein D1 is less than D2, when the central control unit completes the adjustment of the illumination inclination angle and the shutter speed, if the image definition detected for the second time is qualified and an image deformation area exists, the central control unit judges whether to adjust the page turning speed of the file page turning unit according to the actual area ratio D of the image deformation area under the condition that the image deformation area is a non-boundary marking area,
if D is less than or equal to D1, the central control unit judges that the actual proportion of the image deformation area is within an allowable range and controls the image processing device to normally acquire and process the image;
if D1 is larger than D and is not larger than D2, the central control unit judges that the actual occupation ratio of the image deformation area exceeds an allowable range, calculates the difference value delta D between the actual occupation ratio of the image deformation area and the occupation ratio of a preset image deformation area, adjusts the page turning speed to a corresponding value according to the delta D, and sets delta D = D-D1;
if D is larger than D2, the central control unit judges that the actual proportion of the image deformation area exceeds the allowable range, the image processing device has errors and sends out equipment inspection notification.
Furthermore, the central control unit is provided with a preset first image deformation region proportion difference delta D1, a preset second image deformation region proportion difference delta D2, a preset first page turning speed adjusting coefficient alpha 1, a preset second page turning speed adjusting coefficient alpha 2 and a preset page turning speed G0, wherein delta D1 is less than delta D2, alpha 1 is more than 0 and alpha 2 is more than 1, the central control unit adjusts the page turning speed according to the difference delta D between the actual proportion of the image deformation region and the preset image deformation region proportion when the central control unit finishes the judgment of whether the page turning speed is adjusted and the actual proportion D of the image deformation region meets the condition that D1 is more than D and less than D2,
if the delta D is less than or equal to the delta D1, the central control unit judges that the difference value between the actual proportion of the image deformation area and the proportion of the preset image deformation area is in an allowable range and adjusts the page turning speed to G0;
if delta D1 is less than delta D and is not more than delta D2, the central control unit judges that the difference value between the actual proportion of the image deformation area and the proportion of the preset image deformation area exceeds an allowable range and adjusts the page turning speed by using alpha 2, the adjusted page turning speed is recorded as G1, and G1= alpha 2 XG 0 is set;
if delta D > -delta D2, the central control unit judges that the difference value between the actual occupation ratio of the image deformation area and the occupation ratio of the preset image deformation area exceeds an allowable range, adjusts the page turning speed by using alpha 1, marks the adjusted page turning speed as G2, and sets G2= alpha 1 × G0.
Further, the central control unit is provided with a preset unit cycle thickness variation quantity delta H0, a preset file thickness H0 and a preset third page turning speed adjusting coefficient alpha 3, and is set TO be delta H0= G0 xHa xTO, wherein delta H0 is more than H0,0 is more than alpha 1 and more than alpha 2 and more than 1 and less than alpha 3, G0 is a preset page turning speed, ha is the thickness of a single page, the central control unit judges whether TO adjust the page turning speed again according TO the actual thickness variation quantity delta H detected by the thickness detector when the adjustment of the page turning speed of the file page turning unit is completed,
if the delta H is less than or equal to the delta H0, the central control unit judges that the actual thickness variation is within the allowable range and does not perform secondary adjustment on the page turning speed;
if the delta H0 is less than or equal to 5 delta H0, the central control unit judges that the actual thickness variation is within an allowable range and secondarily adjusts the page turning speed to G0;
if the value of 5 delta H0 is smaller than delta H and smaller than or equal to H0, the central control unit judges that the actual thickness variation exceeds the allowable range and secondarily adjusts the page turning speed by using alpha 3, the adjusted page turning speed is marked as G3, and G3= alpha 3 × Gj, j =1,2 is set.
An image processing method comprising: the method comprises the following steps that S1, when an image processing device acquires and processes an image of a file, an image acquisition unit acquires the image of the file and sends the acquired image of the file to a central control unit in a single period; the central control unit preliminarily judges whether the image is qualified or not according to whether the image has deformation and definition when receiving the file image and adjusts the illumination inclination angle to a corresponding value according to the difference value of the actual definition of the image and the definition of a preset image when finishing the judgment; s2, when the central control unit finishes adjusting the illumination inclination angle, the central control unit controls the visual detector to perform secondary detection on the definition of the image, judges whether the shutter speed is adjusted or not according to the definition of the image detected secondarily, and adjusts the shutter speed to a corresponding value according to the difference between the image definition detected secondarily and the preset image definition when the judgment is finished; and S3, when the central control unit finishes adjusting the shutter speed, the central control unit judges whether the page turning speed of the file page turning unit needs to be adjusted according to the image deformation condition detected by the visual detector, adjusts the page turning speed according to the difference value of the actual proportion of the image deformation area and the preset proportion of the image deformation area when the judgment is finished, and judges whether the page turning speed is adjusted again according to the actual thickness variation detected by the thickness detector when the adjustment is finished.
Compared with the prior art, the device has the advantages that whether the image is qualified or not can be preliminarily judged according to whether the image deformation condition exists in the image in the display terminal in the unit image detection period detected by the vision detector arranged on the display terminal or not and the detection value of the image definition by setting the preset image definition, the preset image deformation area ratio and the preset file thickness; whether the shutter speed of the image acquisition unit is adjusted or not can be judged according to the definition of the secondarily detected image; whether the page turning speed is adjusted again can be judged according to the actual thickness variation detected by the thickness detector, the accuracy of image processing is improved, and the accurate monitoring of the definition and the deformation degree of images of a plurality of pages of files, the balance of image acquisition quality and acquisition efficiency and the improvement of image quality are realized.
Furthermore, the device of the invention can preliminarily judge whether the image is qualified or not according to the image deformation condition and the detection value of the image definition of the image in the display terminal in the unit image detection period detected by the visual detector arranged on the display terminal by setting the preset image detection period and the preset image definition, thereby realizing the accurate judgment of the image quality in the period, and further realizing the accurate monitoring of the image definition and the image deformation degree of the multi-page file, the balance of the image acquisition quality and the image acquisition efficiency and the improvement of the image quality.
Furthermore, the device of the invention can adjust the illumination inclination angle according to the difference between the actual image definition and the preset image definition by setting the preset first image definition difference, the preset second image definition difference, the preset first illumination inclination angle adjustment coefficient, the preset second illumination inclination angle adjustment coefficient and the preset illumination inclination angle, thereby improving the accurate adjustment capability of the illumination inclination angle, and further realizing the accurate monitoring of the image definition and the image deformation degree of the multi-page file, the balance of the image acquisition quality and the acquisition efficiency and the improvement of the image quality.
Furthermore, the device of the invention improves the accurate adjustment capability of the shutter speed by carrying out secondary detection on the image definition and judging whether to adjust the shutter speed of the image acquisition unit according to the secondary detection result, indirectly improves the image definition adjustment capability, and further realizes accurate monitoring on the image definition and the image deformation degree of the multi-page file, balance of image acquisition quality and image acquisition efficiency and improvement of image quality.
Furthermore, the device of the invention can adjust the shutter speed according to the difference between the image definition detected twice and the preset image definition by setting the preset third image definition difference, the preset fourth image definition, the preset first shutter speed adjusting coefficient, the preset second shutter speed adjusting coefficient and the preset shutter speed, thereby realizing the precise adjustment of the image definition, further realizing the precise monitoring of the image definition and the image deformation degree of a plurality of pages of files, the balance of the image acquisition quality and the acquisition efficiency and the improvement of the image quality.
Furthermore, the device of the invention can judge whether the page turning speed of the file page turning unit needs to be adjusted according to the image deformation condition detected by the visual detector by setting the preset page turning speed, thereby improving the accurate adjustment capability of the page turning speed, avoiding the image deformation condition, and further realizing the accurate monitoring of the definition and the image deformation degree of the image of the multi-page file, the balance of the image acquisition quality and the image acquisition efficiency and the improvement of the image quality.
Furthermore, the device of the invention can judge whether to adjust the page turning speed of the document page turning unit according to the actual area ratio of the image deformation area by setting the preset first image deformation area ratio and the preset second image deformation area ratio, thereby realizing the accurate adjustment of the page turning speed and the accurate processing of the deformation area of the image, and further realizing the accurate monitoring of the definition and the deformation degree of the image of the multi-page document, the balance of the image acquisition quality and the acquisition efficiency and the improvement of the image quality.
Furthermore, the device of the invention can adjust the page turning speed according to the difference between the actual ratio of the image deformation area and the ratio of the preset image deformation area by setting the preset first image deformation area ratio difference, the preset second image deformation area ratio difference, the preset first page turning speed adjustment coefficient, the preset second page turning speed adjustment coefficient and the preset page turning speed, thereby improving the processing accuracy of the image deformation area, reducing the influence of the image deformation area on the image quality, and further realizing the accurate monitoring of the definition and the image deformation degree of the multi-page file, the balance of the image acquisition quality and the image acquisition efficiency and the improvement of the image quality.
Furthermore, the device provided by the invention can judge whether to adjust the page turning speed again according to the actual thickness variation detected by the thickness detector by setting the preset unit period thickness variation, the preset file thickness and the preset third page turning speed adjustment coefficient, so that the balance between the image acquisition efficiency and the image acquisition quality is realized, and the accurate monitoring of the definition and the image deformation degree of the image of the multi-page file, the balance between the image acquisition quality and the image acquisition efficiency and the improvement of the image quality are further realized.
Furthermore, the method of the invention can effectively supervise and effectively correct the definition of the image and the deformation degree of the image by setting the judging process of whether the image is qualified or not, the adjustment of the shutter speed and the adjustment of the page turning speed, and further realize the accurate monitoring of the definition of the image and the deformation degree of the image of the multi-page document, the balance of the image acquisition quality and the image acquisition efficiency and the improvement of the image quality.
Drawings
FIG. 1 is a block diagram of an overall structure of an image processing apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an image processing apparatus according to an embodiment of the present invention;
FIG. 3 is a flowchart of an image processing method according to an embodiment of the present invention;
FIG. 4 is a block diagram of an image processing unit of an image processing apparatus according to an embodiment of the present invention.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described below with reference to examples; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principles of the present invention, and do not limit the scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1, fig. 2, fig. 3 and fig. 4, which are respectively a block diagram of an overall structure of an image processing apparatus, a block diagram of an image processing apparatus, a flowchart of an image processing method, and a block diagram of an image processing unit according to an embodiment of the present invention, an image processing apparatus according to an embodiment of the present invention includes:
the image acquisition unit 1 is used for acquiring the content of a file image and sending the image content to the image processing unit 2;
the image processing unit 2 is connected with the image acquisition unit 1 and is used for carrying out primary processing on the acquired image content and sending the acquired image information to the central control unit after the processing is finished;
the central control unit is respectively connected with the image acquisition unit 1, the image processing unit 2, the image adjusting unit and the file turning unit 3, and is used for receiving the image information sent by each unit and adjusting the corresponding operating parameters of each unit to corresponding values according to the received image information;
the image adjusting unit is connected with the central control unit and is used for adjusting parameters corresponding to the images;
and the file turning unit 3 is connected with the central control unit and is used for receiving the instruction signal of the central control unit and performing page turning operation on the multi-page files according to the instruction signal.
The device can preliminarily judge whether the image is qualified or not according to whether the image in the display terminal has image deformation or not in a unit image detection period detected by a visual detector arranged in the display terminal and a detection value of the image definition by setting the preset image definition, the preset image deformation area ratio and the preset file thickness; whether the shutter speed of the image acquisition unit 1 is adjusted or not can be determined according to the sharpness of the secondarily detected image; whether the page turning speed is adjusted again can be judged according to the actual thickness variation detected by the thickness detector, the image processing accuracy is improved, and accurate monitoring of the definition and the deformation degree of images of a plurality of pages of documents, balance of image acquisition quality and acquisition efficiency and improvement of image quality are realized.
As shown in fig. 1, the central control unit is provided with a preset image detection period T0 and a preset first image definition E1, and when the apparatus is running, the central control unit obtains the definition E of the image according to whether there is image deformation in the image in the display terminal within a single preset image detection period T0 detected by the visual detector provided in the display terminal, and preliminarily determines whether the image is qualified according to whether there is image deformation and the definition E,
if the image deformation condition exists or E is less than E1, the central control unit judges that the image is unqualified, calculates the difference value delta E between the actual definition of the image and the definition of a preset image, adjusts the illumination inclination angle to a corresponding value according to the delta E, and sets delta E = E1-E;
if the image deformation condition does not exist and E is larger than or equal to E1, the central control unit judges that the image is qualified and continues to perform periodic detection on the image.
The device provided by the invention can preliminarily judge whether the image is qualified or not according to the image deformation condition and the detection value of the image definition of the image in the display terminal in the unit image detection period detected by the vision detector arranged on the display terminal by setting the preset image detection period and the preset image definition, so that the accurate judgment of the image quality in the period is realized, and the accurate monitoring of the image definition and the image deformation degree of a plurality of pages of files, the balance of the image acquisition quality and the image acquisition efficiency and the improvement of the image quality are further realized.
Continuing to refer to fig. 1, the central control unit is provided with a preset first image definition difference Δ E1, a preset second image definition difference Δ E2, a preset first illumination inclination angle adjustment coefficient γ 1, a preset second illumination inclination angle adjustment coefficient γ 2 and a preset illumination inclination angle C0, wherein Δ E1 is smaller than Δ E2, and 0 is smaller than γ 1 and smaller than γ 2, the central control unit adjusts the illumination inclination angle according to the difference Δ E between the actual image definition and the preset image definition when the central control unit completes the judgment on whether to adjust the illumination intensity and the illumination inclination angle and the actual image definition E satisfies E1,
if the delta E is less than or equal to the delta E1, the central control unit adjusts the illumination inclination angle to be C0;
if delta E1 is less than delta E and less than or equal to delta E2, the central control unit adjusts the illumination inclination angle by using gamma 2;
if delta E > -delta E2, the central control unit adjusts the illumination inclination angle by using gamma 1;
when the central control unit adjusts the illumination inclination angle C0 of the light supplement device 4 by using γ i, i =1,2 is set, the adjusted illumination inclination angle is marked as C ', C ' = C0 × γ i is set, and when the central control unit adjusts the initial illumination inclination angle of the light supplement device to C ', the central control unit controls the visual detector to perform secondary detection on the image definition in the next detection period.
According to the device, the illumination inclination angle can be adjusted according to the difference between the actual image definition and the preset image definition by setting the preset first image definition difference, the preset second image definition difference, the preset first illumination inclination angle adjusting coefficient, the preset second illumination inclination angle adjusting coefficient and the preset illumination inclination angle, so that the accurate adjustment capability of the illumination inclination angle is improved, and the accurate monitoring of the image definition and the image deformation degree of a multi-page file, the balance of the image acquisition quality and the image acquisition efficiency and the improvement of the image quality are further realized.
Continuing to refer to fig. 2, the central control unit secondarily detects the sharpness of the image when the adjustment of the illumination inclination angle is completed and determines whether to adjust the shutter speed of the image capturing unit 1 according to the sharpness E' of the secondarily detected image,
if E' is less than or equal to E1, the central control unit judges that the image definition detected secondarily is lower than the allowable range and sends out equipment fault notification;
if E1 is more than E ' and less than or equal to E2, the central control unit judges that the image definition detected secondarily is lower than an allowable range, calculates the difference value delta E ' between the image definition detected secondarily and the preset image definition, adjusts the page turning speed to a corresponding value according to the delta E ', and sets delta E ' = E ' -E1;
if E' > E2, the central control unit judges whether the definition of the image detected secondarily is within an allowable range, controls the visual detector to detect whether a deformation area exists in the image or not, and judges whether the page turning speed of the file page turning unit is adjusted or not according to the detection result.
The device disclosed by the invention has the advantages that the secondary detection is carried out on the image definition, and whether the shutter speed of the image acquisition unit 1 is adjusted or not is judged according to the secondary detection result, so that the accurate adjustment capability of the shutter speed is improved, the image definition adjustment capability is indirectly improved, and the accurate monitoring of the image definition and the image deformation degree of a plurality of pages of files, the balance of the image acquisition quality and the image acquisition efficiency and the improvement of the image quality are further realized.
With reference to fig. 2, the central control unit is provided with a preset third image definition difference Δ E3', a preset fourth image definition Δ E4', a preset first shutter speed adjustment coefficient β 1, a preset second shutter speed adjustment coefficient β 2, and a preset shutter speed V0, where Δ E3' <Δe4',1 < β 2, and the central control unit adjusts the shutter speed according to the difference Δ E ' between the image definition of the secondary detection and the preset image definition when determining whether to adjust the page turning speed,
if the delta E 'is less than or equal to the delta E3', the central control unit judges that the difference value between the image definition of the secondary detection and the preset image definition is in an allowable range and adjusts the shutter speed to be V0;
if delta E3' is less than delta E ' and less than or equal to delta E4', the central control unit judges that the difference value between the image definition of secondary detection and the preset image definition exceeds an allowable range, and adjusts the shutter speed by using beta 1, the adjusted shutter speed is recorded as V1, and V1= beta 1 × V0 is set;
if delta E '> [ delta E4', the central control unit judges that the difference value between the image definition detected secondarily and the preset image definition exceeds an allowable range, adjusts the shutter speed by using beta 2, marks the adjusted shutter speed as V2, and sets V2= beta 2 xV 0.
According to the device, the shutter speed can be adjusted according to the difference between the image definition detected twice and the preset image definition by setting the preset third image definition difference, the preset fourth image definition, the preset first shutter speed adjusting coefficient, the preset second shutter speed adjusting coefficient and the preset shutter speed, so that the accurate adjustment of the image definition is realized, and the accurate monitoring of the image definition and the image deformation degree of a multi-page file, the balance of the image acquisition quality and the image acquisition efficiency and the improvement of the image quality are further realized.
Continuing to refer to fig. 1, the central control unit is provided with a preset page turning speed G0, the central control unit determines whether the page turning speed of the document page turning unit needs to be adjusted according to the image deformation condition detected by the visual detector when the determination of the image definition and the adjustment of the shutter speed are completed and the definition E' of the image detected for the second time is greater than E2,
if the image deformation area is a boundary marking area and is not crossed with the content of the file, the central control unit judges that the page turning speed of the file page turning unit is not adjusted;
if the image deformation area is a non-boundary lineation area, the central control unit controls the visual detector to detect the area of the image deformation area, calculates the proportion of the image deformation area according to the detected area of the image deformation area and adjusts the page turning speed of the file page turning unit to a corresponding value according to the calculation result;
if the image deformation area is a boundary scribing area and is intersected with the file content, the central control unit judges that the page turning speed of the file page turning unit is adjusted to G0.
The device of the invention can judge whether the page turning speed of the file page turning unit needs to be adjusted according to the image deformation condition detected by the visual detector by setting the preset page turning speed, thereby improving the accurate adjustment capability of the page turning speed, avoiding the image deformation condition, and further realizing the accurate monitoring of the definition and the image deformation degree of the images of the multi-page files, the balance of the image acquisition quality and the image acquisition efficiency and the improvement of the image quality.
As shown in fig. 1, the central control unit is provided with a preset first image deformation area ratio D1 and a preset second image deformation area ratio D2, where D1 is smaller than D2, and when the central control unit completes adjustment of the illumination inclination angle and the shutter speed, if the image definition detected twice is qualified and there is an image deformation area, the central control unit determines whether to adjust the page turning speed of the document page turning unit according to the actual area ratio D of the image deformation area when the image deformation area is a non-boundary scribe area,
if D is less than or equal to D1, the central control unit judges that the actual proportion of the image deformation area is within an allowable range and controls the image processing device to normally acquire and process images;
if D1 is larger than D and is not larger than D2, the central control unit judges that the actual occupation ratio of the image deformation area exceeds an allowable range, calculates the difference value delta D between the actual occupation ratio of the image deformation area and the occupation ratio of a preset image deformation area, adjusts the page turning speed to a corresponding value according to the delta D, and sets delta D = D-D1;
if D is larger than D2, the central control unit judges that the actual proportion of the image deformation area exceeds the allowable range, the image processing device has errors and sends out equipment inspection notification.
According to the device, whether the page turning speed of the document page turning unit is adjusted or not can be judged according to the actual area ratio of the image deformation area by setting the preset first image deformation area ratio and the preset second image deformation area ratio, so that the accurate adjustment of the page turning speed and the accurate processing of the deformation area of the image are realized, and the accurate monitoring of the definition and the image deformation degree of the images of the multi-page document, the balance of the image acquisition quality and the image acquisition efficiency and the improvement of the image quality are further realized.
Please refer to fig. 3, the central control unit is provided with a preset first image deformation area ratio difference value Δ D1, a preset second image deformation area ratio difference value Δ D2, a preset first page turning speed adjustment coefficient α 1, a preset second page turning speed adjustment coefficient α 2, and a preset page turning speed G0, wherein Δ D1 is smaller than Δ D2,0 is larger than α 1 and smaller than α 2, the central control unit adjusts the page turning speed according to the difference Δ D between the actual ratio of the image deformation area and the preset image deformation area ratio when the central control unit completes the determination of whether to adjust the page turning speed and the actual ratio D of the image deformation area satisfies D1 and D2,
if the delta D is less than or equal to the delta D1, the central control unit judges that the difference value between the actual occupation ratio of the image deformation area and the occupation ratio of a preset image deformation area is in an allowable range and adjusts the page turning speed to G0;
if the delta D1 is less than the delta D and less than or equal to the delta D2, the central control unit judges that the difference value between the actual occupation ratio of the image deformation area and the occupation ratio of a preset image deformation area exceeds an allowable range, alpha 2 is used for adjusting the page turning speed, the adjusted page turning speed is recorded as G1, and G1= alpha 2 XG 0 is set;
if delta D > -delta D2, the central control unit judges that the difference value between the actual occupation ratio of the image deformation area and the occupation ratio of the preset image deformation area exceeds an allowable range, adjusts the page turning speed by using alpha 1, records the adjusted page turning speed as G2, and sets G2= alpha 1 × G0.
According to the device, the page turning speed can be adjusted according to the difference between the actual proportion of the image deformation area and the proportion of the preset image deformation area by setting the preset first image deformation area proportion difference, the preset second image deformation area proportion difference, the preset first page turning speed adjustment coefficient, the preset second page turning speed adjustment coefficient and the preset page turning speed, so that the accuracy of processing the image deformation area is improved, the influence of the image deformation area on the image quality is reduced, and the accuracy monitoring of the image definition and the image deformation degree of the multi-page file, the balance of the image acquisition quality and the image acquisition efficiency and the improvement of the image quality are further realized.
As shown in fig. 3, the central control unit has a preset unit period thickness variation Δ H0, a preset document thickness H0, and a preset third page-turning speed adjustment coefficient α 3, and sets Δ H0= G0 × Ha × TO, where Δ H0 is greater than H0,0 is greater than α 1 is greater than α 2 is greater than 1 is less than α 3, G0 is a preset page-turning speed, ha is a single page thickness, and determines whether TO adjust the page-turning speed again according TO the actual thickness variation Δ H detected by the thickness detector when the central control unit completes adjustment of the page-turning speed of the document page-turning unit,
if the delta H is less than or equal to the delta H0, the central control unit judges that the actual thickness variation is within the allowable range and does not perform secondary adjustment on the page turning speed;
if the delta H0 is less than or equal to 5 delta H0, the central control unit judges that the actual thickness variation is within an allowable range and secondarily adjusts the page turning speed to G0;
if the 5 delta H0 is smaller than the delta H and is smaller than or equal to H0, the central control unit judges that the actual thickness variation exceeds the allowable range and secondarily adjusts the page turning speed by using alpha 3, the adjusted page turning speed is recorded as G3, and G3= alpha 3 × Gj, j =1,2 is set.
According to the device, whether the page turning speed is adjusted again or not can be judged according to the actual thickness variation detected by the thickness detector by setting the preset unit cycle thickness variation, the preset file thickness and the preset third page turning speed adjustment coefficient, so that the balance between the image acquisition efficiency and the image acquisition quality is realized, and the accurate monitoring of the definition and the deformation degree of the images of the multi-page files, the balance between the image acquisition quality and the image acquisition efficiency and the improvement of the image quality are further realized.
Referring to fig. 3, an image processing method includes:
the method comprises the following steps that S1, when an image processing device acquires and processes an image of a file, in a single period, an image acquisition unit acquires the image of the file and sends the acquired image of the file to a central control unit; the central control unit preliminarily judges whether the image is qualified or not according to whether the image has deformation or not and definition when receiving the file image, and adjusts the illumination inclination angle to a corresponding value according to the difference value of the actual definition of the image and the definition of a preset image when finishing the judgment;
s2, when the central control unit finishes adjusting the illumination inclination angle, the central control unit controls the visual detector to perform secondary detection on the definition of the image, judges whether the shutter speed is adjusted or not according to the definition of the image detected secondarily, and adjusts the shutter speed to a corresponding value according to the difference between the image definition detected secondarily and the preset image definition when the judgment is finished;
and S3, when the central control unit finishes adjusting the shutter speed, the central control unit judges whether the page turning speed of the document page turning unit needs to be adjusted according to the image deformation condition detected by the visual detector, adjusts the page turning speed according to the difference value of the actual proportion of the image deformation area and the preset image deformation area proportion when the judgment is finished, and judges whether the page turning speed is adjusted again according to the actual thickness variation detected by the thickness detector when the adjustment is finished.
The method can effectively supervise and correct the definition of the image and the deformation degree of the image by setting the judging process of whether the image is qualified or not, the adjustment of the shutter speed and the adjustment of the page turning speed, and further realize the accurate monitoring of the definition of the image and the deformation degree of the image of the multi-page document, the balance of the image acquisition quality and the image acquisition efficiency and the improvement of the image quality.
Example 1
if the delta H is less than or equal to 0.2, the central control unit judges that the page turning speed is not adjusted for the second time;
if the delta H is more than 0.2 and less than or equal to 1, the central control unit judges that the actual thickness variation is within an allowable range and secondarily adjusts the page turning speed to G0;
if 1 & ltdelta H & lt 2 & gt, the central control unit judges that the actual thickness variation exceeds the allowable range and secondarily adjusts the page turning speed by using alpha 3, the adjusted page turning speed is recorded as G3, and G3= alpha 3 × Gj, j =1,2 is set.
The thickness variation of unit cycle is predetermine through setting up to this embodiment, can carry out the secondary according to the thickness value that actually turns over the page and adjust the speed of turning over the page, has improved image processing's efficiency under the qualified prerequisite of assurance image, has realized that the image acquires the balance between quality and the acquisition efficiency, has realized that the image acquisition quality and the improvement of the image quality to the accurate monitoring of many pages of documents image definition and image deformation degree, image acquisition quality and the balance of acquisition efficiency.
Example 2
In embodiment 2 of the present invention, on the basis of the present invention, when the definition E ' of the image secondarily detected by the central control unit is in a range where E1 is greater than E ' ≦ E2 and E2 is lower than the allowable range and the image is still unqualified, the difference Δ E ' between the image definition of the secondary detection and the preset image definition is calculated, and Δ E ' = E ' -E1 is set; the central control unit is provided with a preset third image definition difference delta E3', a preset fourth image definition delta E4', a preset first shutter speed adjusting coefficient beta 1, a preset second shutter speed adjusting coefficient beta 2 and a preset shutter speed V0, wherein delta E3' <deltaE 4',1 < beta 2, the central control unit adjusts the shutter speed according to the difference delta E ' between the image definition detected twice and the preset image definition when judging whether the page turning speed is adjusted or not,
if delta E 'is less than or equal to delta E3', the central control unit judges that the shutter speed is adjusted to V0;
if delta E3' is less than delta E ' and less than or equal to delta E4', the central control unit judges that beta 1 is used for adjusting V0;
if delta E '> -delta E4', the central control unit judges that beta 2 is used for adjusting the shutter speed;
when the central control module determines that V0 needs to be adjusted by using β i, i =1,2 is set, the adjusted shutter speed is recorded as V ', and V' = V0 × β i is set.
According to the embodiment, the image definition difference value, the preset shutter speed adjusting coefficient and the preset shutter speed are set, so that the shutter speed can be correspondingly adjusted when the image definition is detected to be unqualified for the first time in an actual situation, the accurate control of the shutter speed is realized, the accurate monitoring of the image definition and the image deformation degree of a plurality of pages of files, the balance of the image acquisition quality and the image acquisition efficiency and the improvement of the image quality are realized.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is apparent to those skilled in the art that the scope of the present invention is not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention; various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An image processing apparatus characterized by comprising:
the image acquisition unit is used for acquiring the content of the file image and sending the image content to the image processing unit;
the image processing unit is connected with the image acquisition unit and is used for carrying out primary processing on the acquired image content and sending the acquired image information to the central control unit after the processing is finished;
the central control unit is respectively connected with the image acquisition unit, the image processing unit, the image adjusting unit and the file turning unit and is used for receiving the image information sent by each unit and adjusting the corresponding operating parameters of each unit to corresponding values according to the received image information;
the image adjusting unit is connected with the central control unit and is used for adjusting parameters corresponding to the images;
and the file turning unit is connected with the central control unit and is used for receiving the instruction signal of the central control unit and performing page turning operation on the multi-page files according to the instruction signal.
2. The image processing device according to claim 1, wherein the central control unit is provided with a preset image detection period T0 and a preset first image definition E1, the central control unit detects whether an image deformation condition exists in the image in the display terminal within a single preset image detection period T0 according to a visual detector arranged in the display terminal when the device is operated, acquires the definition E of the image and preliminarily judges whether the image is qualified according to whether the image deformation condition exists and the definition E,
if the image deformation condition exists or E is less than E1, the central control unit judges that the image is unqualified, calculates the difference value delta E between the actual definition of the image and the definition of a preset image, adjusts the illumination inclination angle to a corresponding value according to the delta E, and sets the delta E = E1-E;
if the image deformation condition does not exist and E is larger than or equal to E1, the central control unit judges that the image is qualified and continues to periodically detect the image.
3. The image processing apparatus according to claim 2, wherein the central control unit is provided with a preset first image sharpness difference Δ E1, a preset second image sharpness difference Δ E2, a preset first light inclination angle adjustment coefficient γ 1, a preset second light inclination angle adjustment coefficient γ 2, and a preset light inclination angle C0, where Δ E1 is less than Δ E2,0 < γ 1 < γ 2 < 1, the central control unit adjusts the light inclination angle according to a difference Δ E between the actual image sharpness and the preset image sharpness when the determination as to whether or not to adjust the light intensity and the light inclination angle is completed and the actual sharpness E of the image satisfies E < E1,
if the delta E is less than or equal to the delta E1, the central control unit adjusts the illumination inclination angle to be C0;
if the delta E1 is less than the delta E and less than or equal to the delta E2, the central control unit adjusts the illumination inclination angle by using gamma 2;
if delta E is > -delta E2, the central control unit adjusts the illumination inclination angle by using gamma 1;
when the central control unit adjusts the illumination inclination angle C0 of the light supplement device by using γ i, i =1,2 is set, the adjusted illumination inclination angle is marked as C ', C ' = C0 × γ i is set, and when the central control unit adjusts the initial illumination inclination angle of the light supplement device to C ', the central control unit controls the visual detector to perform secondary detection on the image definition in the next detection period.
4. The image processing apparatus according to claim 3, wherein the center control unit secondarily detects the sharpness of the image upon completion of the adjustment of the illumination inclination angle and determines whether to adjust the shutter speed of the image acquisition unit based on the sharpness E' of the secondarily detected image,
if E' is less than or equal to E1, the central control unit judges that the image definition detected secondarily is lower than the allowable range and sends out equipment fault notification;
if E1 is more than E ' and less than or equal to E2, the central control unit judges that the image definition detected secondarily is lower than an allowable range, calculates the difference delta E ' between the image definition detected secondarily and the preset image definition, adjusts the page turning speed to a corresponding value according to the delta E ', and sets delta E ' = E ' -E1;
if the definition of the image detected twice is larger than the definition of the image detected twice, the central control unit controls the visual detector to detect whether the image has a deformation area or not, and judges whether the page turning speed of the file page turning unit is adjusted or not according to the detection result.
5. The image processing apparatus according to claim 4, wherein the central control unit is provided with a preset third image definition difference Δ E3', a preset fourth image definition Δ E4', a preset first shutter speed adjustment coefficient β 1, a preset second shutter speed adjustment coefficient β 2, and a preset shutter speed V0, wherein Δ E3' <ΔE4',1 < β 2, the central control unit adjusts the shutter speed based on a difference Δ E ' between the secondarily detected image definition and the preset image definition upon completion of the determination as to whether or not to adjust the page-turning speed,
if the delta E 'is less than or equal to the delta E3', the central control unit judges that the difference value between the image definition of the secondary detection and the preset image definition is in an allowable range and adjusts the shutter speed to be V0;
if delta E3' is less than delta E ' and less than or equal to delta E4', the central control unit judges that the difference value between the image definition of secondary detection and the preset image definition exceeds an allowable range, and adjusts the shutter speed by using beta 1, the adjusted shutter speed is recorded as V1, and V1= beta 1 × V0 is set;
if delta E '> [ delta E4', the central control unit judges that the difference value between the image definition detected secondarily and the preset image definition exceeds an allowable range, adjusts the shutter speed by using beta 2, marks the adjusted shutter speed as V2, and sets V2= beta 2 xV 0.
6. The image processing device according to claim 5, wherein the central control unit is provided with a preset page turning speed G0, the central control unit determines whether the page turning speed of the document page turning unit needs to be adjusted according to the image deformation condition detected by the visual detector when the determination of the image definition and the adjustment of the shutter speed are completed and the definition E' of the secondarily detected image is greater than E2,
if the image deformation area is a boundary marking area and is not crossed with the content of the file, the central control unit judges that the page turning speed of the file page turning unit is not adjusted;
if the image deformation area is a non-boundary lineation area, the central control unit controls the visual detector to detect the area of the image deformation area, calculates the proportion of the image deformation area according to the detected area of the image deformation area and adjusts the page turning speed of the file page turning unit to a corresponding value according to the calculation result;
and if the image deformation area is a boundary scribing area and is intersected with the file content, the central control unit judges that the page turning speed of the file page turning unit is adjusted to G0.
7. The image processing apparatus according to claim 6, wherein the central control unit is provided with a preset first image deformation region ratio D1 and a preset second image deformation region ratio D2, wherein D1 is less than D2, when the central control unit completes the adjustment of the illumination inclination angle and the shutter speed, if the image definition detected twice is qualified and an image deformation region exists, the central control unit determines whether to adjust the page turning speed of the document page turning unit according to the image deformation region actual area ratio D when the image deformation region is a non-boundary ruled region,
if D is less than or equal to D1, the central control unit judges that the actual proportion of the image deformation area is within an allowable range and controls the image processing device to normally acquire and process images;
if D1 is larger than D and is not larger than D2, the central control unit judges that the actual occupation ratio of the image deformation area exceeds an allowable range, calculates the difference value delta D between the actual occupation ratio of the image deformation area and the occupation ratio of a preset image deformation area, adjusts the page turning speed to a corresponding value according to the delta D, and sets delta D = D-D1;
if D is larger than D2, the central control unit judges that the actual proportion of the image deformation area exceeds the allowable range, the image processing device has errors and sends out equipment inspection notification.
8. The image processing apparatus according to claim 7, wherein the central control unit is provided with a preset first image deformation region occupancy difference Δ D1, a preset second image deformation region occupancy difference Δ D2, a preset first page turning speed adjustment coefficient α 1, a preset second page turning speed adjustment coefficient α 2, and a preset page turning speed G0, wherein Δ D1 is smaller than Δ D2,0 < α 1 < α 2 < 1, the central control unit adjusts the page turning speed according to the difference Δ D between the actual occupancy of the image deformation region and the preset image deformation region occupancy when the determination of whether to adjust the page turning speed is completed and the actual occupancy D of the image deformation region satisfies D1 < D2,
if the delta D is less than or equal to the delta D1, the central control unit judges that the difference value between the actual occupation ratio of the image deformation area and the occupation ratio of a preset image deformation area is in an allowable range and adjusts the page turning speed to G0;
if the delta D1 is less than the delta D and less than or equal to the delta D2, the central control unit judges that the difference value between the actual occupation ratio of the image deformation area and the occupation ratio of a preset image deformation area exceeds an allowable range, alpha 2 is used for adjusting the page turning speed, the adjusted page turning speed is recorded as G1, and G1= alpha 2 XG 0 is set;
if delta D > -delta D2, the central control unit judges that the difference value between the actual occupation ratio of the image deformation area and the occupation ratio of the preset image deformation area exceeds an allowable range, adjusts the page turning speed by using alpha 1, records the adjusted page turning speed as G2, and sets G2= alpha 1 × G0.
9. The image processing apparatus according TO claim 8, wherein the central control unit is provided with a preset unit period thickness variation Δ H0, a preset document thickness H0, and a preset third page-turning speed adjustment coefficient α 3, sets Δ H0= G0 × Ha × TO where Δ H0 < H0,0 < α 1 < α 2 < 1 < α 3, G0 is a preset page-turning speed, and Ha is a single-page thickness, determines whether TO readjust the page-turning speed based on an actual thickness variation Δ H detected by the thickness detector when the adjustment of the page-turning speed of the document page-turning unit is completed,
if the delta H is less than or equal to the delta H0, the central control unit judges that the actual thickness variation is within the allowable range and does not perform secondary adjustment on the page turning speed;
if the delta H0 is less than or equal to 5 delta H0, the central control unit judges that the actual thickness variation is within an allowable range and secondarily adjusts the page turning speed to G0;
if the 5 delta H0 is smaller than the delta H and is smaller than or equal to H0, the central control unit judges that the actual thickness variation exceeds the allowable range and secondarily adjusts the page turning speed by using alpha 3, the adjusted page turning speed is recorded as G3, and G3= alpha 3 × Gj, j =1,2 is set.
10. An image processing method based on the image processing apparatus according to any one of claims 1 to 9, comprising:
the method comprises the following steps that S1, when an image processing device acquires and processes an image of a file, an image acquisition unit acquires the image of the file and sends the acquired image of the file to a central control unit in a single period; the central control unit preliminarily judges whether the image is qualified or not according to whether the image has deformation and definition when receiving the file image and adjusts the illumination inclination angle to a corresponding value according to the difference value of the actual definition of the image and the definition of a preset image when finishing the judgment;
s2, when the central control unit finishes adjusting the illumination inclination angle, the central control unit controls the visual detector to perform secondary detection on the definition of the image, judges whether the shutter speed is adjusted or not according to the definition of the image detected secondarily, and adjusts the shutter speed to a corresponding value according to the difference between the image definition detected secondarily and the preset image definition when the judgment is finished;
and S3, when the central control unit finishes adjusting the shutter speed, the central control unit judges whether the page turning speed of the document page turning unit needs to be adjusted according to the image deformation condition detected by the visual detector, adjusts the page turning speed according to the difference value of the actual proportion of the image deformation area and the preset image deformation area proportion when the judgment is finished, and judges whether the page turning speed is adjusted again according to the actual thickness variation detected by the thickness detector when the adjustment is finished.
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