JP2004088437A - Method, device and program for processing image - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To shorten a waiting time until image data is reproduced in applying image processing to the image data. <P>SOLUTION: In a DVD player, density correction processing, gradation conversion processing, color correction processing, sharpness processing and manual correction processing are applied to still image data S0 recorded on a medium M to obtain processing image data S1, and the processed image data is reproduced on a television 3. In such a case, image data SM0 to SM4 subjected to intermediate processing, which are obtained by each of the processing are sequentially reproduced on the television 3. Thus, the still image data S0 to be reproduced can be displayed on the television 3 even without waiting for all of the image processing to be completed. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an image processing method and apparatus for performing image processing on image data, and a program for causing a computer to execute the image processing method.
[0002]
[Prior art]
In a digital still camera (hereinafter referred to as a digital camera), an image acquired by photographing is recorded as digital image data in a medium such as an internal memory or a memory card provided in the digital camera, and based on the recorded digital image data. Thus, it is possible to reproduce an image acquired by photographing on a printer or a monitor. As described above, when an image acquired by a digital camera is reproduced by a monitor or a printer, it is expected to have a high quality image similar to a photograph printed from a negative film.
[0003]
For this reason, when image data acquired by a digital camera is reproduced on a monitor or printer, it consists of a plurality of processing contents such as density correction processing, gradation conversion processing, color correction processing, sharpness processing, image rotation, and trimming. Various image processing methods for performing image processing have been proposed. Such an image processing method is usually executed by image processing software installed in a personal computer. The user then copies the image data from the media of the digital camera to a predetermined folder generated on the hard disk of the personal computer, starts up the image processing software installed on the personal computer, and performs image processing using the GUI of the image processing software. Selection of image data to be applied and various instructions for image processing are performed. Then, the image processing software performs image processing on the image data based on the input instruction, thereby obtaining processed image data.
[0004]
By the way, the DVD player can play a movie recorded on a DVD on a home television or enjoy playing music recorded on a CD. On the other hand, it is also possible to display still image data representing a still image recorded on a medium such as a DVD or CD by a DVD player. Thus, if the image data acquired by the digital camera is recorded on a medium, the image taken by the user can be displayed on a home television and enjoyed with family and friends.
[0005]
At this time, a DVD player is provided with a function of performing image processing, and image processing is performed on image data recorded on a medium, whereby a high-quality image can be displayed on a home television.
[0006]
[Problems to be solved by the invention]
However, since a general-purpose DVD player used in many homes uses a relatively inexpensive CPU, it takes time to complete image processing including a plurality of processing contents as described above. Therefore, the waiting time until one image data is displayed becomes long, and as a result, the stress at the time of reproducing the image data is large.
[0007]
The present invention has been made in view of the above circumstances, and an object thereof is to reduce a waiting time until image data is reproduced when image processing is performed on the image data.
[0008]
[Means for Solving the Problems]
An image processing method according to the present invention is an image processing method for performing image processing consisting of a plurality of processing contents on image data.
The image data is subjected to image processing step by step for each processing content,
The intermediate processed image data obtained at each stage is sequentially output.
[0009]
Examples of “a plurality of processing contents” include density correction processing, gradation conversion processing, color correction processing, sharpness processing, image rotation, and trimming. If the image data is compressed, a process for decompressing the image data may be included in the processing content.
[0010]
“Stepwise” means that image processing is performed according to one processing content, and processed image data according to the processing content (in the present invention, this is referred to as intermediate processed image data), the next processing is performed. The image processing according to the contents is performed on the intermediate processed image data, and finally, the processed image data subjected to the image processing according to all the processing contents is obtained.
[0011]
“Output” means outputting processed image data after processing by one processing content is completed, and an image processed first from a portion processed during processing by one processing content Includes both outputting data.
[0012]
In the image processing method according to the present invention, when performing the image processing on a plurality of the image data, if there is an output request for other image data during the image processing of one image data, the output request Storing the intermediate processed image data for the one image data at the time of
The image processing may be performed on the other image data.
[0013]
In the image processing method according to the present invention, when the image processing is performed on a plurality of the image data, the image processing on the other image data is started immediately after completion of the image processing on one image data. ,
Until the output request for the other image data is made, the intermediate processed image data obtained in each step may be sequentially stored for the other image data.
[0014]
“Start image processing immediately” means that image processing is started without waiting for an output request for other image data.
[0015]
“Sequentially storing intermediate processed image data” means storing the intermediate processed image data obtained in each stage in place of the intermediate processed image data obtained in the previous stage.
[0016]
An image processing apparatus according to the present invention is an image processing apparatus that performs image processing consisting of a plurality of processing contents on image data.
Image processing means is provided for performing stepwise image processing on the image data for each processing content and sequentially outputting intermediate processed image data obtained in each step.
[0017]
In the image processing apparatus according to the present invention, when the image processing unit performs the image processing on a plurality of the image data, there is an output request for other image data during processing of one image data. In this case, intermediate processed image data for the one image data at the time when the output request is made may be stored, and the image processing may be performed on the other image data.
[0018]
In the image processing apparatus according to the present invention, when the image processing unit performs the image processing on a plurality of the image data, immediately after the completion of the image processing on one image data, the other image data is processed. The image processing may be started, and the intermediate processed image data obtained in each step may be sequentially stored for the other image data until an output request is made for the other image data.
[0019]
【The invention's effect】
According to the present invention, when image processing including a plurality of processing contents is performed on image data, image processing is performed on the image data step by step for each processing content, and an intermediate processed image obtained at each stage. Data is output sequentially. As a result, it is possible to display the image data at the intermediate processing stage before the image processing by all the processing contents is completed, so the waiting time until the image data is reproduced is reduced when performing the image processing. Thus, it is possible to reduce the stress of the user who reproduces the image data.
[0020]
Further, by reproducing the output intermediate processed image data, a user who performs image processing can enjoy a state in which the quality of the reproduced image is gradually improved.
[0021]
According to the invention of claim 2, when image processing is performed on a plurality of image data, if there is an output request for other image data during the image processing of one image data, there is an output request. Intermediate processed image data for one image data at the time is stored, and image processing is performed on the other image data. For this reason, when the output request for one image data is made again, the intermediate processed image data for the stored one image data can be output immediately, so that the output request for one image data can be made again. The waiting time until reproduction in the case of performing can be greatly reduced.
[0022]
According to the invention of claim 3, since the image processing for the other image data is started immediately after the completion of the image processing for the one image data, the output request for the other image data is made. At that time, it is possible to immediately output other intermediate processed image data that has already been subjected to image processing up to the middle stage, thereby significantly reducing the waiting time until output of other image data. Can do.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic block diagram showing the configuration of a DVD player to which an image processing apparatus according to an embodiment of the present invention is applied. As shown in FIG. 1, the DVD player 1 according to this embodiment includes a media drive 11 that accepts insertion of a medium M and reads moving image data, still image data S0, audio data, and the like recorded on the medium M, and a moving image. Decoder 12 for decoding data, still image data S0 and audio data; ROM 13 for recording moving image data, still image data S0 and audio data; ROM 13 for recording various information; and various data temporarily RAM 14 serving as a work area for processing, a receiving unit 16 for receiving operations from the remote controller 15, a TV terminal 17 for connecting the TV 3, and external devices such as a memory card reader, a hard disk, and a printer. I / O terminal 18 made of USB, IEEE, etc. for connection, and As described above, when the still image data S0 is reproduced, the image processing means 21 that performs image processing on the still image data S0 to obtain processed image data S1, the media drive 11, the decoder 12, the ROM 13, the RAM 14, the receiving unit 16, A TV terminal 17, an input / output terminal 18, and a CPU 19 for controlling the image processing means 21 are provided.
[0024]
On the medium M, a plurality of still image data S0 acquired by the digital camera 5 in the personal computer 4 is recorded.
[0025]
Here, moving image data, still image data S0, and audio data recorded on the medium M are compressed in a format such as MPEG and JPEG, respectively. The decoder 12 decompresses the compressed moving image data, still image data S0 and audio data recorded on the medium M and inputs them to the television terminal 17 for reproduction. Note that a dedicated decoder 12 may be provided for each of the moving image data, the still image data S0, and the audio data. However, from the viewpoint of downsizing and cost reduction of the apparatus, the moving image data, the still image data S0, and the audio data are provided. It is preferable to provide a dual decoder 12. In addition, when reproducing moving image data, it may be necessary to decode the image and the sound separately. Therefore, a decoder 12 for moving image data and a decoder 12 for sound data and still image data may be provided. preferable.
[0026]
The ROM 13 stores an operation program for the DVD player 1. This operation program causes the CPU 19 to reproduce data, and the operation is performed by the remote controller 15.
[0027]
Here, when data reproduction is instructed, a screen for allowing the user to select data to be reproduced is displayed on the television 3, and the media drive 11 is configured so that the data selected by the user with the remote control 15 is reproduced on the television 3. The decoder 12 and the CPU 19 are driven by a program.
[0028]
For example, when the user inserts the medium M on which the moving image data is recorded into the media drive 11 and instructs the reproduction of the moving image data, the moving image data recorded on the medium M is read by the media drive 11. And is decoded by the decoder 12. The decoded moving image data is output from the television terminal 17 and the moving image is reproduced on the television 3.
[0029]
When the user inserts the medium M on which the still image data S0 is recorded into the media drive 11 and gives an instruction to reproduce the still image data S0, the still image data S0 recorded on the medium M by the media drive 11 Are read out and decoded by the decoder 12. Then, the image processing means 21 performs image processing on the decoded still image data S0, and the processed image data S1 obtained thereby is output from the TV terminal 17 and a still image is reproduced on the television 3. . If a plurality of still image data S0 is recorded on the medium, the user operates the remote controller as will be described later, and the image processing is sequentially performed on the still image data S0 in the order of the file names and reproduced. Is done.
[0030]
When the user inserts the medium M on which the audio data is recorded into the media drive 11 and gives an instruction to reproduce the audio data, the audio data recorded on the medium M is read out by the media drive 11 and the decoder 12 is decoded. The decoded audio data is output from the television terminal 17 and the audio is reproduced on the television 3. Note that a stereo or a speaker may be connected to the input / output terminal 18 so that sound is reproduced by the stereo or the speaker.
[0031]
Note that data may be reproduced by a dedicated chip instead of the ROM 13.
[0032]
The RAM 14 temporarily stores various data and serves as a work area for processing. As will be described later, an intermediate processed image obtained by performing image processing on the still image data S0 to an intermediate stage. Store the data.
[0033]
The remote controller 15 has up / down / left / right keys 15A to 15D, an enter key 15E, and other keys, and transmits a signal indicating an instruction given to the key to the receiving unit 16 when the user presses the key. In this embodiment, the left key 15C and the right key 15D are used. When the right key 15D is pressed while the still image data S0 is displayed, the still image data S0 having the file name next to the displayed still image data S0 is displayed. Is output. When the left key 15C is pressed while the still image data S0 is displayed, a signal for displaying the still image data S0 having the file name before the still image data S0 being displayed is output.
[0034]
The receiving unit 16 receives a signal that is transmitted from the remote controller 15 and represents the operation content operated by the user, and inputs an instruction to drive the DVD player 1 to the CPU 19 according to the operation content. Here, the remote controller 15 can perform all operations of the DVD player 1 such as reproduction of moving image data, still image data S0 and audio data, and various settings.
[0035]
When the reproduction of the still image data S0 is instructed, the image processing unit 21 reads the still image data S0 from the medium M and performs image processing on the read still image data S0. FIG. 2 is a diagram for explaining image processing for still image data S0.
[0036]
In the present embodiment, image processing parameters P1 to P4 for performing density correction processing, gradation conversion processing, color correction processing, and sharpness processing on the still image data S0 are calculated by auto setup. Then, parameters such as image rotation and trimming performed manually by the user who intends to reproduce the still image data S0 are calculated as the image processing parameter P5.
[0037]
First, in order to reduce the amount of calculation, the still image data S0 ′ obtained by decoding the still image data S0 by the decoder 12 is reduced, and the tag of the still image data S0 ′ is set by auto setup. Still image data S0 ′ is analyzed based on information such as subject brightness and strobe presence / absence added to the information, and image processing parameters P1 to P1 for performing density correction processing, gradation conversion processing, color correction processing, and sharpness processing. P4 is calculated sequentially. Here, for density correction and gradation conversion, a one-dimensional lookup table is calculated as image processing parameters P1 and P2, for color correction, a 3 × 3 matrix is calculated as image processing parameter P3, and for sharpness processing, sharpness processing is performed. A profile is calculated as the image processing parameter P4.
[0038]
On the other hand, the digital camera 5 has different playback image quality depending on the model. For this reason, when image processing is performed on the still image data S0 obtained by the digital camera 5 using the image processing parameter P0 including the calculation parameter P1 calculated by auto setup, the image quality of the reproduced image depends on the model. Will be different. Therefore, in the present embodiment, when image processing is performed on the still image data S0, a still image is obtained by a three-dimensional lookup table (LUT1) for absorbing the gradation characteristics and color characteristics of the digital camera 5. Image processing that compensates for the difference between models is performed on the data S0 to obtain intermediate processed image data SM0 in the standard color space in which the difference in image quality for each model of the digital camera 5 is absorbed. Note that the LUT 1 is generated for each model of the digital camera 5 and is managed by the image processing means 21. Instead of LUT1, a one-dimensional lookup table for tone correction and a 3 × 3 matrix for color correction may be used.
[0039]
On the other hand, in the present embodiment, still image data S0 ′ obtained by decoding by the decoder 12 is first output from the television terminal 17 and reproduced. During decoding, a display indicating that processing is in progress, such as an hourglass, is performed on the television 3. Further, it may be reproduced first from the decoded area.
[0040]
When the intermediate processed image data SM0 is obtained by converting the still image data S0 ′, the intermediate processed image data SM0 is output from the television terminal 17 and reproduced.
[0041]
Then, when the image processing parameter P1 is calculated, density correction processing is performed on the intermediate processed image data SM0 by the image processing parameter P1 to obtain intermediate processed image data SM1, which is output from the television terminal 17. Played.
[0042]
Subsequently, when the image processing parameter P2 is calculated, gradation processing is performed on the intermediate processed image data SM1 by the image processing parameter P2 to obtain intermediate processed image data SM2, which is obtained from the TV terminal 17. Output and play.
[0043]
Subsequently, when the image processing parameter P3 is calculated, color correction processing is performed on the intermediate processed image data SM2 by the image processing parameter P3 to obtain intermediate processed image data SM3, which is output from the television terminal 17. To be played.
[0044]
Subsequently, when the image processing parameter P4 is calculated, sharpness processing is performed on the intermediate processed image data SM3 by the image processing parameter P4 to obtain intermediate processed image data SM4, which is output from the television terminal 17. Played.
[0045]
Further, when the image processing parameter P5 by manual correction is calculated, correction by manual operation is performed on the intermediate processed image data SM4 by the image processing parameter P5, and processed image data S1 is obtained. Is output and played.
[0046]
As a result, the television 3 is subjected to a model-corrected still image, a density-corrected still image, a tone-converted still image, a color-corrected still image, and a sharpness process. The still image that has been processed and the still image that has undergone final image processing are sequentially reproduced step by step. The intermediate processed image data SM0 to SM4 and the processed image data S1 may be displayed on the television 3 after the processing in each stage is completed, but the intermediate processed image data SM0 to SM4 and the processed image data are processed in each stage. The image data S1 may be displayed instead of the image being displayed first from the processed portion.
[0047]
Before the processed image data S1 is reproduced, the user presses the right key 15D of the remote controller 15 to instruct reproduction of the still image data S0 whose file name is the next (referred to as the next still image data S0). There is a case. In this case, the processing of the still image data S0 currently being processed may be interrupted and the image processing of the next still image data S0 may be started. Note that the intermediate processed image data SM0 to SM4 of the still image data S0 currently being processed when the next still image data S0 is instructed to be reproduced are stored in the RAM. Accordingly, when the user presses the left key 15C of the remote controller 15 to instruct the reproduction of the still image data S0 before the image processing is started, it is not necessary to perform the image processing from the beginning. The existing still image data S0 can be quickly reproduced.
[0048]
Here, when the next still image data S0 is instructed to be reproduced, it is necessary to decode the next still image data S0 by the decoder 12. Since the next still image data S0 cannot be reproduced during decoding, an hourglass indicating that processing is in progress can be displayed on the television 3 until decoding is completed and still image data S0 'is obtained. preferable.
[0049]
On the other hand, while the processed image data S1 is reproduced and viewed by the user, image processing for the next still image data S0 is immediately started, and still image data S0 ′ or intermediate processing for the next still image data S0 is started. The completed image data SM0 to SM4 and the processed image data S1 are stored in the RAM 14. In this case, if the viewing time of the still image being reproduced is long, image processing is further performed on the next still image data S0. Thus, when the next still image data S0 is instructed to be reproduced, the processed image data S1 of the next still image data S0 can be immediately reproduced on the television 3. Since the capacity of the RAM 14 is limited, only a predetermined number of processed image data S1 is stored in the RAM 14.
[0050]
As described above, when image processing of the next still image data S0 is started, the user may further correct the still image data S0 being reproduced by manual operation. In this case, the processing of the still image data S0 currently displayed is performed by interrupting the processing of the next still image data S0 or lowering the processing priority.
[0051]
Next, the operation of this embodiment will be described. 3 and 4 are flowcharts showing processing performed in the present embodiment. First, it is monitored whether or not the medium M has been inserted into the media drive 11 (step S1). If step S1 is affirmed, it is further monitored whether or not an instruction to reproduce data recorded on the medium M has been issued. Is started (step S2). If step S2 is affirmed, the type of data recorded on the medium M is determined (step S3). When the data recorded on the medium M is moving image data or audio data, the moving image data or audio data is decoded (step S4), and is output from the TV terminal 17 to reproduce the moving image or audio on the television 3. (Step S5), the process ends.
[0052]
On the other hand, if the data recorded on the medium M is still image data S0, the still image data S0 with the file name at the head is read from the medium M (step S6) and decoded (step S7). The still image data S0 'obtained as a result is output from the television terminal 17 and reproduced on the television 3 (step S8). Then, it is determined whether or not an instruction to reproduce the next still image data S0 has been issued (step S9). If step S9 is negative, image processing for compensating for the model difference is performed on the still image data S0 ′. Thus, intermediate processed image data SM0 is obtained (step S10), outputted from the television terminal 17 and reproduced on the television 3 (step S11).
[0053]
Subsequently, it is determined whether or not there is an instruction to reproduce the next still image data S0 (step S12). If step S12 is negative, an image processing parameter P1 for density correction processing based on the still image data S0 ′. Is calculated (step S13), density correction processing is performed on the intermediate processed image data SM0 based on the image processing parameter P1 (step S14), and intermediate processed image data SM1 is obtained. The intermediate processed image data SM1 is output from the television terminal 17 and reproduced on the television 3 (step S15).
[0054]
Subsequently, it is determined whether or not an instruction to reproduce the next still image data S0 has been issued (step S16). If step S16 is negative, an image processing parameter for gradation conversion processing based on the still image data S0 ′ is determined. P2 is calculated (step S17), and gradation conversion processing is performed on the intermediate processed image data SM1 based on the image processing parameter P2 (step S18) to obtain intermediate processed image data SM2. The intermediate processed image data SM2 is output from the television terminal 17 and reproduced on the television 3 (step S19).
[0055]
Subsequently, it is determined whether or not there is an instruction to reproduce the next still image data S0 (step S20). If step S20 is negative, an image processing parameter P3 for color correction processing based on the still image data S0 ′ is determined. Is calculated (step S21), and color correction processing is performed on the intermediate processed image data SM2 based on the image processing parameter P3 (step S22) to obtain intermediate processed image data SM3. The intermediate processed image data SM3 is output from the television terminal 17 and reproduced on the television 3 (step S23).
[0056]
Subsequently, it is determined whether or not there is an instruction to reproduce the next still image data S0 (step S24). If step S24 is negative, the image processing parameter P4 for sharpness processing is determined based on the still image data S0 ′. Calculated (step S25), sharpness processing is performed on the intermediate processed image data SM3 based on the image processing parameter P4 (step S26), and intermediate processed image data SM4 is obtained. The intermediate processed image data SM4 is output from the television terminal 17 and reproduced on the television 3 (step S27).
[0057]
Subsequently, it is determined whether or not there is an instruction to reproduce the next still image data S0 (step S28). If step S28 is negative, it is determined whether or not manual correction has been performed by the user (step S29). If step S29 is positive, an image processing parameter P5 for manual correction processing is calculated (step S30), and manual correction processing is performed on the intermediate processed image data SM4 based on the image processing parameter P5 (step S30). S31), processed image data S1 is obtained. The processed image data S1 is output from the television terminal 17 and reproduced on the television 3 (step S32).
[0058]
Then, it is determined whether or not a termination instruction has been given (step S33), and when step S33 is affirmed, the process is terminated. If step S29 is negative, the process proceeds to step S33. If step S33 is negative, the next still image data S0 is read from the medium M (step S34), the process returns to step S7, and the processing after step S7, that is, the processed image data S1 is displayed on the television 3. In the state, decoding and image processing are performed on the next still image data S0. In this case, the obtained still image data S0 ′ or intermediate processed image data SM0 to SM4 are stored in the RAM.
[0059]
Furthermore, if step S33 is negative, it is determined whether or not there is an instruction to reproduce the next still image data S0 (step S35). If step S35 is negative, the process returns to step S33. If step S35 is positive, the processed image data S1 is stored in the RAM 14 (step S36), and the still image data S0 ′ of the next still image data S0, the intermediate processed image data SM0 to SM4, or the processing is further stored in the RAM 14. It is determined whether or not the completed image data S1 is stored (step S37). If step S37 is affirmed, the process proceeds to steps S8, S11, S15, S19, S23, S27, and S32 according to the type of stored data, and still image data S0 ′ stored in the RAM 14 and intermediate processed. Image data SM0 to SM4 or processed image data S1 is output from the television terminal 17 and reproduced on the television 3.
[0060]
If step S37 is negative, the next still image data S0 is read from the medium M (step S38), the process returns to step S7, and the processes after step S7 are performed.
[0061]
If step S9 is affirmed, the still image data S0 ′ is stored in the RAM 14 (step S41), the next still image data S0 is read from the medium M (step S42), and the process returns to step S7. The processing from step S7 onward for the still image data S0 is performed.
[0062]
If step S12 is affirmed, the intermediate processed image data SM0 is stored in the RAM 14 (step S43), the next still image data S0 is read from the medium M (step S44), and the process returns to step S7. The process from step S7 on the still image data S0 is performed.
[0063]
If step S16 is affirmed, the intermediate processed image data SM1 is stored in the RAM 14 (step S45), the next still image data S0 is read from the medium M (step S46), and the process returns to step S7. The process from step S7 on the still image data S0 is performed.
[0064]
If step S20 is positive, the intermediate processed image data SM2 is stored in the RAM 14 (step S47), the next still image data S0 is read from the medium M (step S48), and the process returns to step S7. The process from step S7 on the still image data S0 is performed.
[0065]
If step S24 is affirmed, the intermediate processed image data SM3 is stored in the RAM 14 (step S49), the next still image data S0 is read from the medium M (step S50), and the process returns to step S7. The process from step S7 on the still image data S0 is performed.
[0066]
If step S28 is positive, the intermediate processed image data SM4 is stored in the RAM 14 (step S51), the next still image data S0 is read from the medium M (step S52), and the process returns to step S7. The process from step S7 on the still image data S0 is performed.
[0067]
As described above, in the present embodiment, when image processing including density correction processing, gradation conversion processing, color correction processing, sharpness processing, and manual correction processing is performed on the still image data S0, a step is performed for each processing content. Since the still image data S0 is subjected to image processing, and the intermediate processed image data SM0 to SM4 obtained at each stage are sequentially output and reproduced, the image processing by all the processing contents is completed. The intermediate processing stage image can be displayed on the television 3. Therefore, it is possible to shorten the waiting time until an image is reproduced on the television 3, and to reduce the stress of the user who reproduces the image.
[0068]
Further, since the still image data S0 ′, the intermediate processed image data SM0 to SM4, and the processed image data S1 are sequentially displayed on the television 3, the user who instructed the image processing gradually increases the image quality of the displayed image. You can enjoy the state of improvement.
[0069]
Further, if there is an instruction to reproduce the next still image data S0 during the processing for one still image data S0, the still image data S0 ′ of the one still image data S0 or the intermediate processed image at the time when the reproduction instruction is issued. Since the data SM0 to SM4 are stored in the RAM 14 and image processing is performed on the next still image data S0, when the reproduction instruction for one still image data S0 is given again, the one stored in the RAM 14 is stored. The data up to the middle of the still image data S0 can be immediately reproduced on the television 3. Accordingly, it is possible to greatly reduce the waiting time until the reproduction when the reproduction instruction for one still image data S0 is performed again.
[0070]
Further, since the image processing of the next still image data S0 is started immediately after the completion of the image processing of the one still image data S0, at the time when the reproduction instruction for the next still image data S0 is given, Still image data S0 that has been subjected to image processing up to the stage can be displayed on the television 3, so that the waiting time until the next still image data S0 is displayed on the television 3 can be greatly reduced. .
[0071]
In the above embodiment, the intermediate processed image data SM0 to SM4 or the processed image data S1 are stored in the RAM 14. However, instead of the intermediate processed image data SM0 to SM4 or the processed image data S1, the image data The processing parameters P1 to P5 may be stored in the RAM 14. Thereby, it is possible to secure the free space of the RAM 14 and store more image processing parameters P1 to P5 of the still image data S0 in the RAM 14. Note that the image processing parameters P1 to P5 stored in the RAM 14 are stored in the RAM 14 while the medium M is inserted into the media drive 11, and are deleted from the RAM 14 after the medium M is taken out from the media drive 11. do it.
[0072]
In the above embodiment, the still image data S0 is reproduced by instructing the reproduction of the individual still image data S0. However, the still image data S0 can also be reproduced continuously like a slide show. is there. In the case of a slide show, the playback time of one still image data S0 can be set. However, if the set playback time is longer than the time until image processing is completed, one still image data S0 is set. Is processed, and the processed image data S1 of the next still image data S0 obtained is stored in the RAM 14, whereby the processed image data S1 is continuously stored. Can be played.
[0073]
On the other hand, if the set playback time is shorter than the time until image processing is completed, all of the processing for compensating for the difference between models, density correction processing, gradation conversion processing, color correction processing, and sharpness processing are performed. Instead, only a process that can be completed within the set reproduction time among the plurality of processes may be performed. For example, only processing other than sharpness processing may be performed.
[Brief description of the drawings]
FIG. 1 is a schematic block diagram showing a configuration of a DVD player to which an image processing apparatus according to an embodiment of the present invention is applied.
FIG. 2 is a diagram for explaining image processing;
FIG. 3 is a flowchart (part 1) illustrating processing performed in the embodiment.
FIG. 4 is a flowchart (part 2) showing processing performed in the embodiment.
[Explanation of symbols]
1 DVD player
3 TV
4 PC
5 Digital camera
11 Media drive
12 Decoder
13 ROM
14 RAM
15 Remote control
16 Receiver
17 TV terminal
18 Input / output terminals
19 CPU
21 Image processing means

Claims (9)

In an image processing method for performing image processing consisting of a plurality of processing contents on image data,
The image data is subjected to image processing step by step for each processing content,
An image processing method characterized by sequentially outputting intermediate processed image data obtained in each stage. When performing the image processing on a plurality of the image data, if there is an output request for other image data during the image processing of the one image data, the one image data at the time when the output request is made Store intermediate processed image data,
The image processing method according to claim 1, wherein the image processing is performed on the other image data. In performing the image processing on a plurality of the image data, immediately after the completion of the image processing for one image data, the image processing for other image data is started immediately,
3. The image processing method according to claim 1, wherein the intermediate processed image data obtained in each step is sequentially stored for the other image data until an output request is made for the other image data. In an image processing apparatus that performs image processing consisting of a plurality of processing contents on image data,
An image processing apparatus comprising image processing means for performing image processing on the image data step by step for each processing content, and sequentially outputting intermediate processed image data obtained in each step. The image processing means, when performing the image processing on a plurality of the image data, if there is an output request for other image data during the image processing of one image data, The image processing apparatus according to claim 4, wherein the image processing apparatus stores intermediate processed image data for the one image data and performs the image processing on the other image data. The image processing means starts the image processing for other image data immediately after completion of the image processing for one image data when performing the image processing on a plurality of the image data, and the other image data 6. The image processing apparatus according to claim 4, further comprising means for sequentially storing the intermediate processed image data obtained in each step for the other image data until an output request is made for the data. In a program for causing a computer to execute an image processing method for performing image processing consisting of a plurality of processing contents on image data,
A procedure for performing image processing on the image data in stages for each processing content;
A program for sequentially outputting intermediate processed image data obtained in each stage. When performing the image processing on a plurality of the image data, if there is an output request for other image data during the image processing of the one image data, the one image data at the time when the output request is made Procedures for storing intermediate processed image data of
The program according to claim 7, further comprising a procedure for performing the image processing on the other image data. A procedure for starting the image processing for other image data immediately after the completion of the image processing for one image data when performing the image processing on a plurality of the image data;
9. The program according to claim 7, further comprising a step of sequentially storing intermediate processed image data obtained in each step for the other image data until an output request is made for the other image data.

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