JPH09135316A - Device and method for processing image - Google Patents

Device and method for processing image

Info

Publication number
JPH09135316A
JPH09135316A JP7291126A JP29112695A JPH09135316A JP H09135316 A JPH09135316 A JP H09135316A JP 7291126 A JP7291126 A JP 7291126A JP 29112695 A JP29112695 A JP 29112695A JP H09135316 A JPH09135316 A JP H09135316A
Authority
JP
Japan
Prior art keywords
image
image processing
mode
preview
processing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
JP7291126A
Other languages
Japanese (ja)
Inventor
Nobuo Yamamoto
信夫 山本
Original Assignee
Canon Inc
キヤノン株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Canon Inc, キヤノン株式会社 filed Critical Canon Inc
Priority to JP7291126A priority Critical patent/JPH09135316A/en
Publication of JPH09135316A publication Critical patent/JPH09135316A/en
Withdrawn legal-status Critical Current

Links

Abstract

It is an object of the present invention to prevent moire from occurring in a preview image and to obtain a good preview display. An image forming mode in which first image processing is performed to form an image on a recording medium by an image forming unit, and a preview mode in which second image processing is performed to preview an image formed in the image forming mode. An image processing apparatus including: an input unit that inputs image data indicating a target image; and image processing that performs image processing on the image data according to a set mode and outputs output image data. The image processing means performs edge enhancement to emphasize an edge portion when the set mode is the image forming mode, and the edge processing when the set mode is the preview mode. An image processing apparatus characterized by not emphasizing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image processing apparatus and method having a preview function.

[0002]

2. Description of the Related Art In recent years, digital color copying machines have been made higher in image quality and higher in function, and have come to be able to considerably meet user's expectations regarding the tint of an output image and editing processing. In such a situation, in order to obtain a desired output image, a copying machine having a so-called preview function of displaying an image on a display device and confirming the output instead of repeatedly outputting the image on paper has been commercialized. .

Among them, there is a device for displaying and confirming the original image read by using a black and white liquid crystal display, but when the main body is a color copying machine, the tint of the output image cannot be confirmed as well. It is desirable that the display device also be a full color display preview system.

FIG. 7 shows a system having a preview function proposed by the present applicant. Blocks 11 to 17 form a full-color copying machine, and blocks 21 to 25 form a preview system.

In the above structure, first, a block of a full-color copying machine will be described. A color document on a document table (not shown) is read by a scanner 11, and 8-bit digital signals of RGB three colors are generated. Each color separation data is converted from an RGB luminance signal into a CMY density signal by a logarithmic conversion circuit 12 including an LUT (Lookup Table). And masking and UCR (Unde
r Color Removal (undercolor removal) circuit 13
At, a CMYK color signal suitable for the printer characteristics is generated. After that, various image editing processes such as trimming, painting, and scaling are performed at 14, a smoothing process is performed at 15, and an edge enhancement process is performed at 16 according to the user's setting, and then a hard copy is output by the printer 17.

To explain the preview system, first, the CMYK image signal immediately before the hard copy output is used for the preview processing so that the processing applied to the image on the color copying machine side can be faithfully reproduced on the preview screen. . The CMYK image signal immediately before the hard copy output is
The inverse masking circuit 21 and the inverse logarithmic conversion circuit 22 perform inverse conversion to RGB signals. By the way, the RGB signal obtained here is based on the color space of the scanner, and even if this signal is output to the display device as it is, it is necessary to correctly reproduce the original image due to the influence of the color development characteristics and nonlinearity of the display device. I can't. Therefore, the image signal is further converted from the color space of the scanner to the color space of the display device by the 3 × 3 matrix conversion circuit 23, the non-linearity of the display device is corrected by the gamma correction circuit 24, and then the display device 2
5 is output.

[0007]

However, in the above-mentioned conventional example, when the edge emphasis is applied, the moire of the preview image is emphasized, and there is an improvement in that the image looks clearly different from the hard copy output image.

The present invention has been made in view of the above points, and it is an object of the present invention to prevent generation of moire in a preview image and obtain a good preview display.

[0009]

In order to achieve the above object, the present invention has the following constitutional requirements.

According to a first aspect of the present invention, an image forming mode in which the first image processing is performed by the image forming means to form an image on a recording medium, and a second image is formed in order to preview the image formed in the image forming mode. An image processing apparatus having a preview mode for performing image processing, comprising: input means for inputting image data indicating a target image; and image processing according to the set mode for the image data to output an output image. Image processing means for outputting data, the image processing means performs edge enhancement for enhancing an edge portion when the set mode is the image forming mode, while the set mode is The feature is that the edge is not emphasized in the preview mode.

Further, input means for inputting image data showing a target image, setting means for setting an image processing mode,
Image processing means for performing image processing according to the image processing mode on the input image data and outputting output image data, wherein the image processing means has a character mode set as the image processing mode. In this case, the edge enhancement is performed when outputting to the image forming unit, and the edge enhancement is not performed when outputting to the image display unit.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION

(Embodiment 1) FIG. 1 is a block diagram best showing the features of the present invention. Blocks 11 to 17 constitute a full-color copying machine 100, and 21 to 25 are preview processing units 20.
0.

In FIG. 1, 11 is a scanner for digitally reading a reflection original (not shown) as RGB signals pixel by pixel, 12 is a logarithmic conversion circuit for converting RGB luminance signals into CMY density signals, and 13 is a color characteristic of the printer. A masking / UCR circuit for matching, a circuit for performing various image edits such as trimming, painting and scaling, a spatial filter circuit for performing a smoothing process, a spatial filter circuit for performing an edge enhancement process, and a laser exposure system. Or with an inkjet printer, cyan,
Controls the density of magenta, yellow, and black toner or ink to output a full-color image in hard copy. Reference numeral 21 is an inverse masking circuit for realizing the inverse conversion of 13, reference numeral 22 is an inverse logarithmic conversion circuit for returning the CMY density signal to RGB luminance signal, and reference numeral 23 is for converting the RGB image signal from the color space of the scanner to the color space of the display device. A 3 × 3 matrix conversion circuit, 24 is a gamma correction circuit for correcting non-linearity of the display device, and 25 is a display device (CRT monitor, liquid crystal display, plasma display, LED display, etc.).

Although the image editing circuit 14 is displayed only at one place for the sake of clarity, it is actually placed at various positions according to various kinds of image processing such as color balance change, color conversion and mask processing. An image processing circuit is provided.

The above-mentioned processing units are controlled by the CPU 51 connected via the CPU bus 50.

The CPU 51 controls each processing unit using the RAM 53 as a work memory based on the program stored in the ROM 52.

The operation unit 54 also displays images as shown in FIGS. 3, 4 and 6 so that the user can set various parameters and modes.

Next, the preview processing section 200 will be described in detail.

The final image data Y3, M3, C3, K3 output from the full-color copying machine 100 are first input to the 3 × 4 inverse masking correction circuit 21, and the following equation is calculated. This corresponds to the inverse operation of the masking UCR13.

Y5 = a11 * Y3 + a12 * M3 + a13 * C3 + a14 * K3 M5 = a21 * Y3 + a22 * M3 + a23 * C3 + a24 * K3 C5 = a31 * Y3 + a32 * M3 + a33 * C3 + a34 * K3

The coefficients a11 to a34 can be set to arbitrary coefficients from the CPU 51 via the CPU bus 50. By this 3 × 4 inverse masking correction process, the density information of the four colors Y3, M3, C3, and K3 can be converted into the density information of the three colors Y5, M5, and C5.

Next, the inverse operation of the logarithmic transformation of the inverse logarithmic transformation 22 is applied to the density information of the three colors Y5, M5 and C5,
Luminance information on a predetermined color space based on the CCD 201 of the three colors R 1 , G 1 , and B 1 can be obtained. YMCK depending on printer characteristics by inverse masking correction processing and logarithmic conversion
Is converted into RGB density data in which the result of each color process performed at the time of image formation is reflected. However, since there are many types of display devices that are actually connected and the display characteristics based on the color reproduction range and the like are also different, in order to perform color matching between the output image of the printer 17 and the display image of the display device 25, A means for adjusting this is required. That is, R 1 , G 1 , and B 1 luminance information are C
It is necessary to make corrections based on the display characteristics of RT, observation conditions, and the like.

The 3 × 3 matrix conversion 23 corrects the image data so as to match the color-developing characteristics of the monitor so that the tint of the image displayed on the monitor and the tint of the image output on the paper are approximately matched. The following matrix calculation is performed.

R2 = b11 * R1 + b12 * G1 + b13 * B1 G2 = b21 * R1 + b22 * G1 + b23 * B1 B2 = b31 * R1 + b32 * G1 + b33 * B1

There are many types of display devices that are actually connected, the color reproduction ranges are different, and the illumination of the environment of use is also different. Therefore, the tint of the image displayed on the monitor and the output on the paper are output. The following factors must be taken into consideration in order to always match the tint of the image. a) Monitor color temperature b) Monitor color development characteristics c) Illumination light

In this embodiment, the color temperature of the monitor is set to 650.
Limited to 0K or 5000K. Furthermore, the color development characteristics of the monitor were examined with respect to representative manufacturers (Sony, Mitsubishi, Hitachi, NEC, Matsushita, etc.). Also, as the illumination light,
Since fluorescent lamps are usually used, five typical fluorescent lamps are used, namely daylight color (6500K) and daylight white (50
00K), white (4150K), warm white (3500K)
And the color temperature in the light bulb color (3000 K) were measured.

In this embodiment, a 3 × 3 matrix is prepared in advance corresponding to the combination of the above three elements.

Here, a) and b) depend on the characteristics of the monitor, and c) depends on the observation conditions.

Then, a 3 × 3 monitor color is set using a 3 × 3 matrix based on a) the color temperature of the monitor, b) the color development characteristics of the monitor, and c) the illumination light set by the user using the operation unit as shown in FIG. Make a correction.

The method of calculating the 3 × 3 matrix will be described below.

The xy chromaticity coordinates and the luminance Y are measured for each of the three primary colors [R], [G], and [B] of the monitor. The measured xyz chromaticity coordinates of [R] are (xr, yr, z
r), the sum of the XYZ tristimulus values of the unit amount of [R] is represented as Sr. However, zr = 1-xr-yr, and Sr is an unknown number. The same applies to [G] and [B]. Then, the following equation holds. Here, [] is a symbol representing a color stimulus.

[0032]

[Outside 1]

When R = G = B = 1, this formula realizes white [W] of illumination light (xy chromaticity coordinates = (xw, yw)) (X = xw / yw, Y = 1). , Z = (1-xw-y
If it is solved as w) / yw), Sr, Sg, Sb are obtained, and finally the conversion matrix M is obtained.

On the other hand, the matrix S for converting the color system of the scanner into the XYZ color system is obtained in advance by measuring each spectral characteristic of the RGB color separation filter of the scanner. At this time, the 3 × 3 matrix is a matrix operation (M −1 ×
S). However, if the color temperature of the illuminating light and the color temperature of the monitor are different, use the von Kreis chromatic adaptation prediction formula to estimate the color tint of the image displayed on the monitor and the tint of the image output on the paper. 3 × to be worth
3 matrix is corrected.

The monitor gamma correction 24 is a circuit for correcting the non-linearity of the monitor called the gamma characteristic, and realizes the calculation of the following equation by the LUT.

R3 = 255 * ((R2-Roffset) / 255) ^ (1 / γ) G3 = 255 * ((G2-Goffset) / 255) ^ (1 / γ) B3 = 255 * ((B2-Boffset) ) / 255) ^ (1 / γ)

However, Roffset and Goffse
t and Boffset are R, G, and B offset components (amount of light emission when the brightness setting value is zero, and a component of illumination light reflected on the monitor and entering the eye).

However, it is known that the gamma characteristic changes even when the brightness of the monitor is changed, and the gamma characteristic visually perceived depends on the illuminance of the use environment.
It is not preferable to fix the gamma value. Therefore, a plurality of conversion tables in which the gamma value is changed in steps of 0.1 from approximately 1 to 30 are held in advance in the ROM,
By selecting the correction data of any gamma value,
The user can adjust the gamma value to the optimum value while looking at the monitor.

Therefore, R 2 corrected by the 3 × 3 matrix conversion 23 based on the characteristics and environmental conditions of the display device 25.
G 2 B 2 can be fine-tuned by the user using monitor gamma correction.

In FIG. 7, the density corresponds to the gamma value.

As described above, according to this embodiment, it is possible to set the parameters relating to the preview processing from the operation unit of the copying machine.

FIG. 2 is a flow chart of this embodiment, and the operation of FIG. 1 will be described together with this flow chart. Referring to FIG. 1, first, the block of the full-color copying machine will be described. A color reflection original document on a document table (not shown) is read by a scanner 11 to generate 8-bit digital signals for each of the three colors RGB (S11). These color separation data are converted into a logarithmic conversion circuit 12 including an LUT.
In step S12, the RGB luminance signal is converted into the CMY density signal. Then, the masking / UCR circuit 13 generates CMYK color signals suitable for the printer characteristics (S1).
3). The masking / UCR calculation is given by the following equation with K0 = min (C0, M0, Y0).

[0043]

[Outside 2]

Thereafter, in accordance with the user's setting, various image editing processes such as trimming, painting and scaling (S14)
After smoothing processing (S15) in 14) and 15 and edge enhancement processing in 16 (S16), the printer 17
Is output by hard copy (S17).

By the way, in the color copying machine, the optimum original type can be selected from the operation panel according to the original to be copied. That is, when the manuscript type key 32 on the operation panel of FIG. 3 is pressed, as shown in FIG.
Characters, maps, photographic paper photos, printed photos, text printed photos
Six types of manuscripts for character photographic paper photographs are displayed, and one of them can be selected. Then, for example, in the character mode and the map mode, the edge emphasis filter 16 works and reproduces characters clearly in detail, but in the print photo mode, both the smoothing filter 15 and the edge emphasis filter 16 work to suppress the occurrence of moire. It is like this.

Here, the resolution of the scanner is 400 dp.
i (dot per inch), and the resolution of the hard copy output is similar to that of the scanner, but the resolution of the display device is, for example, 70 dpi in the case of a CRT monitor.
Therefore, when outputting an image read from a scanner, particularly a halftone image of a halftone dot print having a periodicity close to the resolution of the display device, moire is likely to occur only in the preview image.

This will be described in more detail. For simplicity, a one-dimensional case will be described. In the digital system, if the spatial frequency component of the input signal is ½ or less of the sampling frequency as shown in FIG. 5, moire does not occur. On the contrary, if the spatial frequency component of the input signal reaches the sampling frequency region, moire is very likely to occur. Displaying the information read by the scanner of 400 dpi on the display device of 70 dpi is equivalent to just lowering the sampling frequency by about 1/6, and thus the preview image is likely to have moire.

However, if it is left as it is, there are many cases where there is no problem in practical use. However, when edge emphasis is applied, this is equivalent to differential processing. Therefore, high frequency components near the sampling frequency of the display device are obtained. Is amplified and only the moire of the preview image is emphasized, which causes a problem that the image looks apparently different from the image output in hard copy.

The edge emphasis filter works when the character mode and the map mode are selected or when the sharpness is increased. In these cases, the image output as a hard copy can certainly be confirmed with the naked eye for the effect of edge enhancement, but since it exceeds the display capability of the display device, it is meaningless to display it as a preview image.

Therefore, in the preview system of this embodiment, a preview image is created using the CMYK signals immediately before entering the edge enhancement filter. That is, the density information of the four colors C3, M3, Y3 and K3 immediately before entering the edge enhancement filter is converted into C by the inverse masking circuit 21.
Converted to density information of three colors of 5, M5 and Y5 (S2
1).

Next, the CMY signal is inversely converted into an RGB signal by the inverse logarithmic conversion circuit 22 including an LUT (S
22) The 3 × 3 matrix circuit 23 converts the color space of the scanner into the color space of the display device (S2).
3).

Finally, a gamma correction circuit 2 composed of an LUT
After the non-linearity of the display device is corrected by 4 (S2
4), which is adapted to be output to the display device 25 (S25).

As described above, according to this embodiment, the operation unit 5
When the image forming mode is set in step 4, S11 to S17
I do. On the other hand, if the preview mode is set, S
11 to S15 and S21 to S25 are performed. Therefore, in the preview mode, the edge enhancement is not performed regardless of the image type (FIG. 4) set by the operation unit 54, so that it is possible to prevent the occurrence of moire in the preview display.

The present invention is not limited to the above embodiment. For example, in the configuration shown in FIG.
The edge emphasis filter 16 may be turned off (a state in which a signal simply passes) only in the case of preview output by a command from the CPU 41.

[0055]

As described above, according to the present invention, the edge portion can be clearly reproduced by performing the edge emphasis in the image forming mode. Further, in the preview mode, it is possible to prevent the occurrence of moire in the preview display by not performing edge enhancement. That is, a good preview display can be obtained.

In particular, it is possible to prevent moire in the preview display in the character mode and obtain a good preview display.

[Brief description of the drawings]

FIG. 1 is a block diagram of an image processing apparatus according to an embodiment.

FIG. 2 is a flowchart of image processing according to the embodiment.

FIG. 3 is an external view of an operation unit panel.

FIG. 4 is an external view of an operation unit panel.

FIG. 5 is a diagram illustrating a relationship between a spatial frequency of an image and a sampling frequency.

FIG. 6 is an external view of an operation unit panel.

FIG. 7 is a block diagram of an image processing apparatus according to a modified example of the embodiment.

FIG. 8 is a block diagram of a conventional image processing apparatus.

Claims (10)

[Claims]
1. An image forming mode for performing a first image processing for forming an image on a recording medium by an image forming means, and a preview for performing a second image processing for previewing an image formed in the image forming mode. An image processing apparatus having a mode, an input means for inputting image data representing a target image, and an image for performing image processing on the image data according to a set mode and outputting output image data. Processing means, the image processing means performs edge enhancement to enhance an edge portion when the set mode is the image forming mode, and, when the set mode is the preview mode, An image processing apparatus characterized by not performing edge enhancement.
2. An image forming means for forming an image on a recording medium based on output image data subjected to image processing according to the image forming mode, wherein the input means reads the target image. The image processing apparatus according to claim 1, which generates image data.
3. The image processing apparatus according to claim 1, wherein the image processing means performs processing according to the mode and the type of the target image.
4. The image processing means: a) When the image forming mode is set, when the type of the target image is character, edge enhancement is performed; when the type of the target image is photo Performs smoothing processing. B) When the preview mode is set, edge enhancement is not performed when the type of the target image is text, and smoothing processing is performed when the type of the target image is photo. The image processing apparatus according to claim 3, wherein
5. The image processing means performs image processing according to the output characteristics of the image forming means, and outputs output image data corresponding to each recording material of the image forming means. The image processing apparatus according to item 1.
6. A preview image processing unit different from the image processing unit is further provided, and the preview image processing unit performs preview image processing on output image data corresponding to each of the recording agents included in the image forming unit. 6. The image processing apparatus according to claim 5, wherein the preview image data is output according to the display characteristics of the display unit that displays the preview image.
7. The image processing means performs masking processing based on a predetermined masking coefficient, and the preview image processing means performs reverse masking processing corresponding to reverse processing of the masking processing. Image processing device.
8. An input unit for inputting image data representing a target image, a setting unit for setting an image processing mode, and image processing according to the set image processing mode for the input image data, Image processing means for outputting output image data, wherein the image processing means performs edge emphasis when outputting to the image forming means when the character mode is set as the image processing mode, and the image display means An image processing apparatus characterized in that edge enhancement is not performed when outputting to.
9. An image forming mode for performing a first image processing for forming an image on a recording medium by an image forming means, and a preview for performing a second image processing for previewing an image formed in the image forming mode. An image processing method having a mode, comprising: an input step of inputting image data representing a target image; and an image processing step of performing image processing on the image data according to a set mode and outputting output image data. The image processing means performs edge enhancement for enhancing an edge portion when the set mode is the image forming mode, and when the set mode is the preview mode, An image processing method characterized by not performing edge enhancement.
10. An input step of inputting image data representing a target image, a setting step of setting an image processing mode, and image processing according to the set image processing mode is performed on the input image data, An image processing step of outputting output image data, wherein the image processing means performs edge enhancement when outputting to the image forming means when the character mode is set as the image processing mode, and the image display means An image processing method characterized by not performing edge enhancement when outputting to.
JP7291126A 1995-11-09 1995-11-09 Device and method for processing image Withdrawn JPH09135316A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7291126A JPH09135316A (en) 1995-11-09 1995-11-09 Device and method for processing image

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7291126A JPH09135316A (en) 1995-11-09 1995-11-09 Device and method for processing image

Publications (1)

Publication Number Publication Date
JPH09135316A true JPH09135316A (en) 1997-05-20

Family

ID=17764798

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7291126A Withdrawn JPH09135316A (en) 1995-11-09 1995-11-09 Device and method for processing image

Country Status (1)

Country Link
JP (1) JPH09135316A (en)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7199839B2 (en) 2001-11-28 2007-04-03 Samsung Electronics Co., Ltd. Color signal processing device for multi-primary color display and method thereof
US8009333B2 (en) 1998-11-09 2011-08-30 Silverbrook Research Pty Ltd Print controller for a mobile telephone handset
US8025393B2 (en) 1998-11-09 2011-09-27 Silverbrook Research Pty Ltd Print media cartridge with ink supply manifold
US8030079B2 (en) 1998-11-09 2011-10-04 Silverbrook Research Pty Ltd Hand-held video gaming device with integral printer
US8127230B2 (en) 2008-08-27 2012-02-28 Sharp Kabushiki Kaisha Display control device, image forming apparatus, method for controlling display device, and storage medium
US8337001B2 (en) 1998-11-09 2012-12-25 Silverbrook Research Pty Ltd Compact printer with static page width printhead
US8355168B2 (en) 2009-02-06 2013-01-15 Sharp Kabushiki Kaisha Processing apparatus, image reading processing apparatus, image forming apparatus, image processing method, and storage medium, all of which carry out automatic color selection (ACS) regardless of color setting of output image data
US8355177B2 (en) 2008-08-27 2013-01-15 Sharp Kabushiki Kaisha Image processing apparatus, image forming apparatus, image processing method, and computer-readable storage medium containing image processing program
US8625177B2 (en) 2008-08-27 2014-01-07 Sharp Kabushiki Kaisha Image processing apparatus, image forming apparatus, image processing method, and storage medium, each of which performs, on monochrome image data to image display device, or two-color image data, color matching process of reducing differences in color between image to be outputted by image display device and image to be outputted by printing apparatus
US8699043B2 (en) 2008-08-27 2014-04-15 Sharp Kabushiki Kaisha Image processing apparatus, image forming apparatus, image processing method, and computer-readable storage medium containing image processing program
US8836809B2 (en) 1997-07-15 2014-09-16 Google Inc. Quad-core image processor for facial detection
US8866923B2 (en) 1999-05-25 2014-10-21 Google Inc. Modular camera and printer
US8896724B2 (en) 1997-07-15 2014-11-25 Google Inc. Camera system to facilitate a cascade of imaging effects
US8902333B2 (en) 1997-07-15 2014-12-02 Google Inc. Image processing method using sensed eye position
US8902340B2 (en) 1997-07-12 2014-12-02 Google Inc. Multi-core image processor for portable device
US8908075B2 (en) 1997-07-15 2014-12-09 Google Inc. Image capture and processing integrated circuit for a camera
US8936196B2 (en) 1997-07-15 2015-01-20 Google Inc. Camera unit incorporating program script scanner
US8938062B2 (en) 1995-12-11 2015-01-20 Comcast Ip Holdings I, Llc Method for accessing service resource items that are for use in a telecommunications system
US9019566B2 (en) 2008-08-27 2015-04-28 Sharp Kabushiki Kaisha Image processing apparatus, image forming apparatus, image processing method, and computer-readable storage medium containing image processing program
US9055221B2 (en) 1997-07-15 2015-06-09 Google Inc. Portable hand-held device for deblurring sensed images
JP2015177361A (en) * 2014-03-14 2015-10-05 富士ゼロックス株式会社 Image processing device, image forming system and image forming apparatus
US9191505B2 (en) 2009-05-28 2015-11-17 Comcast Cable Communications, Llc Stateful home phone service
US9521281B2 (en) 2009-04-07 2016-12-13 Sharp Kabushiki Kaisha Image processing apparatus including first image processing section performing first image processing on image data to be supplied to image output apparatus and second image processing section performing second image processing on image data to be supplied to image display device, and image forming apparatus including the image processing apparatus

Cited By (68)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8938062B2 (en) 1995-12-11 2015-01-20 Comcast Ip Holdings I, Llc Method for accessing service resource items that are for use in a telecommunications system
US8902340B2 (en) 1997-07-12 2014-12-02 Google Inc. Multi-core image processor for portable device
US8947592B2 (en) 1997-07-12 2015-02-03 Google Inc. Handheld imaging device with image processor provided with multiple parallel processing units
US9544451B2 (en) 1997-07-12 2017-01-10 Google Inc. Multi-core image processor for portable device
US9338312B2 (en) 1997-07-12 2016-05-10 Google Inc. Portable handheld device with multi-core image processor
US9148530B2 (en) 1997-07-15 2015-09-29 Google Inc. Handheld imaging device with multi-core image processor integrating common bus interface and dedicated image sensor interface
US9219832B2 (en) 1997-07-15 2015-12-22 Google Inc. Portable handheld device with multi-core image processor
US9197767B2 (en) 1997-07-15 2015-11-24 Google Inc. Digital camera having image processor and printer
US8896724B2 (en) 1997-07-15 2014-11-25 Google Inc. Camera system to facilitate a cascade of imaging effects
US9191530B2 (en) 1997-07-15 2015-11-17 Google Inc. Portable hand-held device having quad core image processor
US9191529B2 (en) 1997-07-15 2015-11-17 Google Inc Quad-core camera processor
US9185247B2 (en) 1997-07-15 2015-11-10 Google Inc. Central processor with multiple programmable processor units
US8836809B2 (en) 1997-07-15 2014-09-16 Google Inc. Quad-core image processor for facial detection
US8866926B2 (en) 1997-07-15 2014-10-21 Google Inc. Multi-core processor for hand-held, image capture device
US9185246B2 (en) 1997-07-15 2015-11-10 Google Inc. Camera system comprising color display and processor for decoding data blocks in printed coding pattern
US8896720B2 (en) 1997-07-15 2014-11-25 Google Inc. Hand held image capture device with multi-core processor for facial detection
US9179020B2 (en) 1997-07-15 2015-11-03 Google Inc. Handheld imaging device with integrated chip incorporating on shared wafer image processor and central processor
US8902357B2 (en) 1997-07-15 2014-12-02 Google Inc. Quad-core image processor
US8902324B2 (en) 1997-07-15 2014-12-02 Google Inc. Quad-core image processor for device with image display
US8902333B2 (en) 1997-07-15 2014-12-02 Google Inc. Image processing method using sensed eye position
US9237244B2 (en) 1997-07-15 2016-01-12 Google Inc. Handheld digital camera device with orientation sensing and decoding capabilities
US8908069B2 (en) 1997-07-15 2014-12-09 Google Inc. Handheld imaging device with quad-core image processor integrating image sensor interface
US8908075B2 (en) 1997-07-15 2014-12-09 Google Inc. Image capture and processing integrated circuit for a camera
US8908051B2 (en) 1997-07-15 2014-12-09 Google Inc. Handheld imaging device with system-on-chip microcontroller incorporating on shared wafer image processor and image sensor
US8913137B2 (en) 1997-07-15 2014-12-16 Google Inc. Handheld imaging device with multi-core image processor integrating image sensor interface
US8913151B2 (en) 1997-07-15 2014-12-16 Google Inc. Digital camera with quad core processor
US9432529B2 (en) 1997-07-15 2016-08-30 Google Inc. Portable handheld device with multi-core microcoded image processor
US8922670B2 (en) 1997-07-15 2014-12-30 Google Inc. Portable hand-held device having stereoscopic image camera
US8922791B2 (en) 1997-07-15 2014-12-30 Google Inc. Camera system with color display and processor for Reed-Solomon decoding
US8928897B2 (en) 1997-07-15 2015-01-06 Google Inc. Portable handheld device with multi-core image processor
US8934027B2 (en) 1997-07-15 2015-01-13 Google Inc. Portable device with image sensors and multi-core processor
US8934053B2 (en) 1997-07-15 2015-01-13 Google Inc. Hand-held quad core processing apparatus
US8936196B2 (en) 1997-07-15 2015-01-20 Google Inc. Camera unit incorporating program script scanner
US8937727B2 (en) 1997-07-15 2015-01-20 Google Inc. Portable handheld device with multi-core image processor
US8913182B2 (en) 1997-07-15 2014-12-16 Google Inc. Portable hand-held device having networked quad core processor
US9560221B2 (en) 1997-07-15 2017-01-31 Google Inc. Handheld imaging device with VLIW image processor
US8947679B2 (en) 1997-07-15 2015-02-03 Google Inc. Portable handheld device with multi-core microcoded image processor
US8953178B2 (en) 1997-07-15 2015-02-10 Google Inc. Camera system with color display and processor for reed-solomon decoding
US8953061B2 (en) 1997-07-15 2015-02-10 Google Inc. Image capture device with linked multi-core processor and orientation sensor
US8953060B2 (en) 1997-07-15 2015-02-10 Google Inc. Hand held image capture device with multi-core processor and wireless interface to input device
US9168761B2 (en) 1997-07-15 2015-10-27 Google Inc. Disposable digital camera with printing assembly
US9055221B2 (en) 1997-07-15 2015-06-09 Google Inc. Portable hand-held device for deblurring sensed images
US9060128B2 (en) 1997-07-15 2015-06-16 Google Inc. Portable hand-held device for manipulating images
US9124736B2 (en) 1997-07-15 2015-09-01 Google Inc. Portable hand-held device for displaying oriented images
US9124737B2 (en) 1997-07-15 2015-09-01 Google Inc. Portable device with image sensor and quad-core processor for multi-point focus image capture
US9131083B2 (en) 1997-07-15 2015-09-08 Google Inc. Portable imaging device with multi-core processor
US9137398B2 (en) 1997-07-15 2015-09-15 Google Inc. Multi-core processor for portable device with dual image sensors
US9137397B2 (en) 1997-07-15 2015-09-15 Google Inc. Image sensing and printing device
US9143636B2 (en) 1997-07-15 2015-09-22 Google Inc. Portable device with dual image sensors and quad-core processor
US9143635B2 (en) 1997-07-15 2015-09-22 Google Inc. Camera with linked parallel processor cores
US9584681B2 (en) 1997-07-15 2017-02-28 Google Inc. Handheld imaging device incorporating multi-core image processor
US8337001B2 (en) 1998-11-09 2012-12-25 Silverbrook Research Pty Ltd Compact printer with static page width printhead
US8009333B2 (en) 1998-11-09 2011-08-30 Silverbrook Research Pty Ltd Print controller for a mobile telephone handset
US8014022B2 (en) 1998-11-09 2011-09-06 Silverbrook Research Pty Ltd Mobile phone having pagewidth printhead
US8025393B2 (en) 1998-11-09 2011-09-27 Silverbrook Research Pty Ltd Print media cartridge with ink supply manifold
US8030079B2 (en) 1998-11-09 2011-10-04 Silverbrook Research Pty Ltd Hand-held video gaming device with integral printer
US8087838B2 (en) 1998-11-09 2012-01-03 Silverbrook Research Pty Ltd Print media cartridge incorporating print media and ink storage
US8866923B2 (en) 1999-05-25 2014-10-21 Google Inc. Modular camera and printer
US7199839B2 (en) 2001-11-28 2007-04-03 Samsung Electronics Co., Ltd. Color signal processing device for multi-primary color display and method thereof
US8127230B2 (en) 2008-08-27 2012-02-28 Sharp Kabushiki Kaisha Display control device, image forming apparatus, method for controlling display device, and storage medium
US8355177B2 (en) 2008-08-27 2013-01-15 Sharp Kabushiki Kaisha Image processing apparatus, image forming apparatus, image processing method, and computer-readable storage medium containing image processing program
US8625177B2 (en) 2008-08-27 2014-01-07 Sharp Kabushiki Kaisha Image processing apparatus, image forming apparatus, image processing method, and storage medium, each of which performs, on monochrome image data to image display device, or two-color image data, color matching process of reducing differences in color between image to be outputted by image display device and image to be outputted by printing apparatus
US8699043B2 (en) 2008-08-27 2014-04-15 Sharp Kabushiki Kaisha Image processing apparatus, image forming apparatus, image processing method, and computer-readable storage medium containing image processing program
US9019566B2 (en) 2008-08-27 2015-04-28 Sharp Kabushiki Kaisha Image processing apparatus, image forming apparatus, image processing method, and computer-readable storage medium containing image processing program
US8355168B2 (en) 2009-02-06 2013-01-15 Sharp Kabushiki Kaisha Processing apparatus, image reading processing apparatus, image forming apparatus, image processing method, and storage medium, all of which carry out automatic color selection (ACS) regardless of color setting of output image data
US9521281B2 (en) 2009-04-07 2016-12-13 Sharp Kabushiki Kaisha Image processing apparatus including first image processing section performing first image processing on image data to be supplied to image output apparatus and second image processing section performing second image processing on image data to be supplied to image display device, and image forming apparatus including the image processing apparatus
US9191505B2 (en) 2009-05-28 2015-11-17 Comcast Cable Communications, Llc Stateful home phone service
JP2015177361A (en) * 2014-03-14 2015-10-05 富士ゼロックス株式会社 Image processing device, image forming system and image forming apparatus

Similar Documents

Publication Publication Date Title
US5296923A (en) Color image reproducing device and method
US5572632A (en) Universal frame buffer for a rendering device
DE102004001937B4 (en) Process for the reproduction of spot colors with primary inks and secondary inks
US5809366A (en) Method and system for calibrating a color copier
US6434266B1 (en) Image processing method and apparatus for converting colors in a color image
EP0652674B1 (en) Cascaded image processing using histogram prediction
DE4305693C2 (en) Color calibration procedure
US6400843B1 (en) Color image reproduction with accurate inside-gamut colors and enhanced outside-gamut colors
US6421142B1 (en) Out-of-gamut color mapping strategy
US6023527A (en) Method and system of selecting a color space mapping technique for an output color space
US6404517B1 (en) Color-patch sheet registration
US6441923B1 (en) Dynamic creation of color test patterns based on variable print settings for improved color calibration
US7164498B2 (en) Color matching for a printing process using more than four colorants using a four-colorant color management system
EP0486311B1 (en) Color image processing apparatus and method
US7414752B2 (en) Scanner and printer profiling system
JP3841151B2 (en) Image processing apparatus, image processing method, program, and recording medium
US5748858A (en) Method of and system for predicting reproduced color image
JP2919768B2 (en) Color printing method
EP0723728B1 (en) Colour value conversion process and device
DE4310727C2 (en) Method and device for analyzing image templates
EP1821518B1 (en) Personalized color reproduction
US6719392B2 (en) Optimized color ranges in gamut mapping
US5748342A (en) Image processing apparatus and method
US7463386B2 (en) Color processing device and its method
JP3290190B2 (en) Image recording device

Legal Events

Date Code Title Description
A300 Withdrawal of application because of no request for examination

Free format text: JAPANESE INTERMEDIATE CODE: A300

Effective date: 20030204