TWI234682B - Method for capturing a digital image - Google Patents

Abstract

A method for capturing a digital image by a digital camera. The method includes: (a) providing a image sensor and capturing a first image by the image sensor after receiving a first triggering signal, and (b) capturing a partial section, not the entire section, of the first image by the image sensor and displaying the partial section on an electric viewfinder of the digital camera for previewing the partial section of the first image.

Description

1234682 V. Description of the invention (1) The technical field to which the invention belongs .........---- .. 1 ................. ..... '............................--............... ”-........-... The present invention provides a method for capturing digital images. The method of previewing the focus status before the digital image. The digital cameras of the prior art are now popular digital products, and the connectivity of peripheral electronic products also makes the digital phase 22ft: redundant, one difference is the digital The meaning of the second (electric viewfinder), the user can preview the scene to be shot or viewed in the electronic viewfinder electronic viewfinder, shooting, broadcasting, and then through the electronic viewfinder Scenery, image 1 ^ ^ ^ ΛViewing the southward shooting and digital cameras now provide rain, the fight is to say that 5 users want to take pictures; 2 functions, also the electronic six, survey = 1 focus As well as the function to shoot = quick-type id7, window preview, and then preview the memory of the 2-bit camera after previewing] to save the image and The setting of the first section of the shutter is called 2 and it is the action of shooting like a shirt. Although fried ten can provide users with electronic viewing

Page 5 12346682 5. Description of the invention (2) Viewing the scenes to be photographed, but due to the limitations of the resolution and size of today's electronic viewfinders, users often use digital cameras for digital images The image signal captured by the image sensor is sampled by a digital signal processor (DSP) and displayed on the electronic viewfinder. It will cause a certain degree of distortion. Therefore, when the camera system indicates that it is in focus, the user cannot know the details of the focus state to determine whether the camera system is in good focus, whether the focus is sharp, or whether the focus target is correct. In this way, the user often feels that there is no problem when previewing the scene to be shot during the shooting process. However, after shooting, the previous photo is played and found to have poor focus or blurred images caused by manual and moving objects, which makes it impossible to Make up for the regret of taking important landscapes or time. SUMMARY OF THE INVENTION The present invention provides a method for capturing digital images to solve the above problems. The patent application scope of the present invention discloses a method for capturing digital images using a digital camera, which includes the following steps: (a) providing an image sensor and using the image sensor when receiving a first touch signal The detector operates a first image; and (b) the image sensor captures only a partial block of the first image instead of a complete block, and displays the partial block

Page 61234682 V. Description of the invention (3) '--- The electronic viewfinder of the digital camera to preview the part of the first image | qP block 0-Figure II. First embodiment of the digital camera 10 front view Please refer to Figure 1 for implementation. The digital camera 10 includes a lens 12 for capturing: an object, an optical viewfinder 14 composed of a plurality of lens groups, so that a person can take light into the optical viewfinder 14 and refract the image through the lens While viewing the scene to be shot through the optical viewfinder 14, a two-stage shutter key 16 allows the user to focus and shoot an image by pressing the two-stage shutter key 16. Please refer to FIG. 2. FIG. 2 is a rear view of the digital camera 10 according to the first embodiment. The digital camera 10 further includes an electronic viewfinder 18, which can provide the user with another view outside the optical viewfinder 14. The electronic viewfinder 8 can be a display device such as a liquid crystal display (LCD) or a low temperature poly silicon (LTPS) display, and a control button set 19. The user can select By manipulating the control button group 19 for image editing, browsing or setting of shooting parameters. Please refer to Figure 3. Figure 3 is a functional diagram of digital camera 丨 0. Digital camera 10 also includes an image sensor 20, which can convert the received light signal into an electrical signal. The resolution of the image can be Vietnam 'which can include a plurality of photosensitive coupled elements (charge coupled

Page 7 12346682 5. Description of the invention (4) device (CCD) or a plurality of complementary metal oxide-semiconductor semiconductors (complementary metar-oxide semiconductors), device 22, which is used to process the captured image signal, with L14 ? To store the captured images, which can be-fast ^ chromosomes, as common among rabbits. ? Card, 81) card, etc., a read-only, | # body, such as the first disc, or a micro-drive. The working principle of the digital camera 10 is as follows: 'The lens 12 can be used to receive one on the image sensor 20, and the image is converted into an electrical signal, and the processor 22 is processed, and the digital signal is stored to the memory. Device 24, and the system will be 18 to present the image, so that when the user wants to shoot an action image light source and focus the image light on the sensor 20, the image light signal electrical signal is transmitted to the digital signal. The address processor 22 can transmit the image signal to an electronic viewer for the user to view or edit the image. Refer to Figure 4 for the digital camera of the present invention. 〇 Take a first image by manual focusing. 2 6 is a flowchart, and FIG. 5 is a schematic diagram of the first image 26. The method for shooting the first image 26 includes the following steps: Step 98: = Manually adjust the shooting focus, exposure and white balance of the digital camera 10. And other conditions; Step 1 0 0: Press the first segment of the two-stage shutter button 丨 6 to generate a first touch signal and send the first touch signal to the image sensor.

Page 8 1234682 Description of the invention (5) Detector 20; Step i () · Find ^ _i? — ~ Image sensor 20 captures the first signal after receiving the first touch signal

—The light source of image 2 6 and convert the light signal into the first and image 2 6 electrical signals; P Step 1 0 4: Change the signal to the signal processor 2 2 and use the digital signal processor Page 2 2 f takes part of the first image 2 6 instead of the complete block, and generates a second image 2 8 signal, and Figure 6 is a schematic diagram of the second scene 'image 2 8; Step 10 6 : The signal from the first card and the second card is transmitted from the digital signal processor 22 to the time of bu, λ. The electronic viewfinder 18 is used to display the second image 28; Step 1 0 · · Yu Bo ~ μ ^ w Mody execute step 丨 〇6, if you press the two-stage shutter button 丨 6 to perform step 1 1 0, otherwise skip the shooting process and go to step 119; Step 110: press the two-stage shutter After the second segment of the key 16, a second touch signal is generated, and the second touch signal is transmitted to the image ^ sensor 2 0; " Step 11 2: The image sensor 2 receives the second touch signal Then point to the page again to take the light source of the first image 26, and convert the light signal into the electrical signal of the first image 26; Step 11 4 ·· The signal is transmitted from the image sensor 20 to the digital signal processor 22. The digital signal processor 22 is used to compress the first image 2 6 electrical signals in equal proportions, and the compressed signal is transmitted to the electronic viewfinder 18. Show final decision

1234682 V. Description of the invention (6) Photographed; Step 1116: After performing Step 114, if the image captured with the remaining control is performed, Step 11 8 is performed; otherwise, the shooting process is abandoned and skip to Step 1 1 9; Step 11 8: After confirming the storage using the control button set 19, the complete block signal of the first image 26 is stored by the digital signal processor 22 to the memory device 2 4; and step 11 9: the shooting is ended. The feature of the above method is that after pressing the first segment of the two-stage shutter key, the specific segment of the first image 26 can be previewed instead of the complete segment, and the size of the specific segment is And the position can have different choices according to different designs. In this embodiment, the central part of the captured image block is used as a preview display, and the position and size of the selected capture are not limited in the present invention. , Even the frame position and frame size to be previewed can be preset by the user; in addition, the partial block can be zoomed in or zoomed out and then displayed in Electronic viewfinder 18 for digital camera 10. In addition, when the image sensor captures only a part of the first image, the first image can also be zoomed in or out, and then the first image that has been zoomed in or out can be captured. Part of the image is displayed in the electronic viewfinder of the digital camera. After previewing the more detailed specific areas, users can know whether the current shooting conditions are good and good, such as whether the focal length is blurred, whether the brightness is too high or insufficient, and whether

1234682 V. Description of the invention (7) The image of whether the balance is too small or not is shot after the preview. If you want to save the image, please refer to Figure 7. The first and second touch signals can also provide a first touch signal. The camera is shot by pressing the camera 30 with the same position as shown below

Waiting for Z, unlike the conventional technology, only the full-scale sophomore t2 method can be used to clearly obtain the information of the captured image; if it is = 1 > the conditions are different, you can adjust it again or give up the payline and you can press two The second segment of the segment shutter button 16 to the memory device 2 4. FIG. 7 is a rear view of the digital camera 30 of the second embodiment. The point is that the first touch signal and the second key of the present invention are not limited to the use of two-stage shutter keys 16, two 32, and a second key 34, which causes the first-PM key 32 to be generated. The first Two touch signals = generated. The other device components in Figure 7 and Figure 2 jf have the same functions, and the principle of counting shirts is the same as that described in the first embodiment. In the above embodiment, the camera is manually adjusted for shadow damage. The present invention can also be applied to the shooting mode of autofocus. Figure 8 is a flowchart of the digital camera of the present invention to automatically match the first image 26. The method includes the following steps. Step 1 20: Press the first segment of the two-stage shutter button 16 to the first = sign, and send the first touch signal II image

1234682 V. Description of the invention (8) Step 1 2 2: The image sensor 2 0 captures the light source of the first image 26 after receiving the first touch signal, and replaces the light signal with the first image 2 6 Electrical signal; step 124: transmitting the electrical signal of the first image 26 from the image sensor 20 to the digital signal processor 2 2 and using the digital signal processor 2 2 to capture part of the first image 26 instead of the complete area Block signal, and a second image 28 signal is generated, and FIG. 6 is a schematic diagram of the first image 28; Step 1 26: The second image 28 signal is transmitted from the digital signal processor 22 to the electronic view Viewport 1 8 to display the second image 2 8; Step 128: After performing step 126, if the second step of the two-stage shutter button is pressed, step 130 is performed, otherwise skip the shooting process and skip to step 1 4 0; Step 130: After pressing the second segment of the two-stage shutter button 16, a first touch signal is generated and the second touch signal is transmitted to the ▲ sensor 20 ^ ^ ^ ^ ^ ^ ~ Step 132: After receiving the second touch signal, the image sensor 20 then shakes the digital camera 10 to capture the first image. A light source of a third image ^ 3 6 is captured under the conditions of a shooting focal length of 26, a data amount, or a white balance, and the light signal is converted into a third image 36 electrical ^, and FIG. 9 is a third Schematic diagram of image 36; disordering step 134: The third image 36 electrical signal is processed by the image sensor 20 digital signal processor 22, and the third image 36 electrical signal is compressed by the digital signal processor ratio.

1234682 " " " " V. Description of the invention (9) The greeting is transmitted to the electronic viewfinder 18 to display the image finally decided to shoot; ... ^ — Step 1 36: After performing step 丨 34, If you use the control button group i to recognize and save the captured image, go to step 1 3 8; otherwise, give up the shooting process and skip to step 1 40; μ Step I38 · Use the control button group 19 to sign and save, ^^ ^ 2 whole area The block signal is stored by the digital signal processor; 'Hidden device 2 4 · · and step 1 4 0 · · End the shooting. In the case of the shutter button, for example, the lock or white split block can be used for shooting. The 16th camera of the 16th camera can be fixed and the five scales are set instead of the different phases of the image. An embodiment of the method is characterized in that-after the segment, it can be locked at a shooting focus of 10, the exposure amount, or the shooting of the snowman's head in the middle of the picture, etc. At the same time, preview the locked shot: 3 whole blocks, And the design of the specific part of the specific part has different choices. The size of the ghost and the central part of the bit block are used to make ^ In this embodiment, the lens 12 of the machine 10 is used to use the second. display. After that, the shooting of the two images 36 is as follows: ~ Like the shooting conditions of 26, as shown in Figure 9, you can move the first tree of the door key 16 to the left of the middle shot 1 2 The snowman focused on the forehead was moved to the book and the two-stage quick-press was pressed, but the image is still clear = the left of the face, and the snowman is moved. If the user does not want to move & = take the mirror of the camera 1 〇 1234682_ from the auto focus V. Description of the invention (10) Outside composition, you can press the first stage of the two-stage shutter button 16 and then press the first In two steps, the shooting of the first image 26 can be completed. Compared with the conventional digital image capture method, the method of the present invention can preview the shooting condition of the image to be captured with minimal distortion during preview, and can improve the user's inability to cut the original when the camera system indicates that the focus has been achieved. Obtain detailed information about the focus state to determine whether the camera system is in good focus, whether the focus is sharp, or whether the focus target is correct. After previewing the more detailed specific areas, users can know whether the shooting conditions are good, such as whether the focal length is blurred, whether the brightness is too high or insufficient, and whether the white balance is biased. If the shooting conditions are felt after the preview, The deviation can be adjusted or abandoned. If it is feasible, you can press the second segment of the two-stage shutter button 16 to save the image to the memory device 24. This will improve the user during the shooting process. Preview ^ I think there is no problem when shooting the scene, but after shooting, I played back the previous picture and found that there is a poor focus or a blurred image caused by manual and object movements. The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the scope of the patent application for the present invention shall fall within the scope of the patent of the present invention.

Page 14 1234682 Brief description of the drawings Brief description of the drawings Figure 1 is a front view of the digital camera of the first embodiment. FIG. 2 is a rear view of the digital camera of the first embodiment. Figure 3 is a functional diagram of a digital camera. FIG. 4 is a flowchart of a digital camera capturing a first image in a manual focus mode according to the present invention. Figure 5 is a schematic diagram of the first image. Figure 6 is a schematic diagram of the second image. FIG. 7 is a rear view of the digital camera of the second embodiment. FIG. 8 is a flowchart of a digital camera taking a first image in an autofocus mode according to the present invention. Figure 9 is the intention of the second image. Explanation of Symbols 10 Digital camera 12 Lens 14 Optical viewfinder 16 Two-stage shutter key 18 Electronic viewfinder 19 Control button group 20 Image sensor 22 Digital signal processor 24 Memory device 2 6 First Image 28 image 30 digital camera 32 button 34 second button 36 image

Page 15

Claims (1)

1234682 6. Scope of patent application 1. A method for digital image capture using a digital camera, including the following steps: (a) providing an image sensor and using the image sensor when receiving a first touch signal A first image is captured by the sensor; and (b) only a part of the first image is captured by the image sensor instead of the complete block, and a part of the block is displayed on the digital camera. An electronic viewfinder to preview a portion of the first image. 2. The method as described in item 1 of the scope of patent application, in step (b), after the image sensor captures only a part of the first image instead of a complete block, the part The block will be enlarged (ζ ο 〇 mi η) or reduced (joom ou t)? Before it will be displayed in the electronic viewfinder of the digital camera. 3. The method according to item 1 of the scope of patent application, in step (b), before the image sensor captures only a part of the first image instead of a complete block, the first The image will be zoomed in (ζ 〇am i η) or zoomed out (zoom out), and then part of the block will be displayed in the electronic viewfinder of the digital camera. 4. The method described in item 1 of the scope of patent application, which further comprises after performing step (b), if the digital camera receives a second touch signal, the image sensor captures the Complete block of the first image, and save the complete block of the first image to a memory device, otherwise the first image should not be stored Page 16 1234682 The complete block is stored to the memory device. 5. According to the method described in item 4 of the patent claim, the segment shutter button, the middle button, the first button, the second button, the second button, the first button, the first button, the first button, the first button, and the second button are pressed. The first slave of the two-stage shutter key is generated, and the second touch signal is generated by the second stage of the door key. It is from the fork to the two paragraphs. The method as described in item 4 of the scope of patent application, which further includes providing a ί i i second button, wherein the first touch signal is generated by pressing the button, the The second touch signal is generated by pressing the second button. 7. The method according to item 4 of the scope of patent application, further comprising, after the digital camera receives the second touch signal, compressing the image and then displaying the compressed image in the electronic viewing of the digital camera window. 8. The method according to item 1 of the scope of patent application, wherein the image sensor includes a plurality of charge coupled devices (CCD). 9. The method according to item 1 of the scope of patent application, wherein the image sensor comprises a plurality of complementary metal-oxide semiconductors (CMOS). 1234682_ VI. Application scope of patent 10. The method described in item 1 of the scope of patent application, wherein the electronic viewfinder is a liquid crystal display (1 i qu id cry sta 1 di sp 1 ay, LCD) ^ 1 1 The method according to item 1 of the scope of patent application, wherein the electronic viewfinder is a low temperature polysilicon display (LTPS) 〇 1 2. The method described above, wherein the memory device is a flash memory. 13. The method according to item 3 of the scope of patent application, wherein the memory device is a read-only memory. 14. The method according to item 1 of the scope of patent application, further comprising, after performing step (b), if the digital camera receives a second trigger signal, the digital camera captures the first image according to the digital camera. Under the conditions of shooting focus, exposure, or white balance, use the image sensor to capture a second image and save the second image to a memory device, otherwise the second image will not be stored to the memory device. 15. The method according to item 14 of the scope of patent application, further comprising providing a two-stage shutter key, wherein the first touch signal is generated by pressing to the first stage of the two-stage shutter key, The second touch signal is generated by pressing the second segment of the two-stage shutter button. Page 18 1234682 6. Scope of patent application 16. The method described in item 14 of patent application scope further includes providing a first button and a second button, wherein the first touch signal is generated by pressing the button. The first button is generated, and the second touch signal is generated by pressing the second button. 17. The method according to item 14 of the scope of patent application, further comprising compressing the second image after the digital camera receives the second trigger signal, and then displaying the compressed second image on the digital Camera's electronic viewfinder. 18. The method according to item 14 of the scope of patent application, wherein the memory device is a flash memory. 19. The method according to item 14 of the scope of patent application, wherein the memory device is a read-only memory. Page 19