CN110349235A - Generate the method and computer-readable medium of the combined color image of examined PCB - Google Patents
Generate the method and computer-readable medium of the combined color image of examined PCB Download PDFInfo
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- CN110349235A CN110349235A CN201910598410.3A CN201910598410A CN110349235A CN 110349235 A CN110349235 A CN 110349235A CN 201910598410 A CN201910598410 A CN 201910598410A CN 110349235 A CN110349235 A CN 110349235A
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- 238000000034 method Methods 0.000 title claims abstract description 44
- 238000013507 mapping Methods 0.000 claims abstract description 75
- 230000005855 radiation Effects 0.000 claims abstract description 7
- 230000007547 defect Effects 0.000 claims description 23
- 239000004020 conductor Substances 0.000 claims description 8
- 238000007689 inspection Methods 0.000 claims description 8
- 230000001052 transient effect Effects 0.000 claims description 8
- 239000012212 insulator Substances 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000004534 enameling Methods 0.000 abstract description 2
- 230000006870 function Effects 0.000 description 15
- 230000004048 modification Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 6
- 238000013459 approach Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000004590 computer program Methods 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 241000238097 Callinectes sapidus Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T11/00—2D [Two Dimensional] image generation
- G06T11/001—Texturing; Colouring; Generation of texture or colour
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T9/00—Image coding
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- Engineering & Computer Science (AREA)
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- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Multimedia (AREA)
- Image Processing (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Image Generation (AREA)
Abstract
The invention discloses the methods and computer-readable medium of a kind of combined color image for generating examined PCB, this method comprises: one or more area-of-interests in selection one or more PCB；One or more color images that area-of-interest obtains area-of-interest are illuminated with radiation；Based on color image, determine colored to monochromatic mapping；Based on colored to monochromatic mapping, monochrome is calculated to colored mapping, the value of at least one monochrome image pixel is mapped to the value of at least one composograph pixel；Check that system obtains at least part of monochrome image of examined PCB by one；And it is monochromatic to colored mapping by application, at least part of monochrome image of examined PCB is converted into at least part of combined color image of examined PCB by an image processor.The present invention can obtain the combined color image of PCB without color camera by enameling to monochromatic mapping reversion application to be monochromatic in color image to colored mapping.
Description
Technical field
The present invention relates to PCB image synthesis field more particularly to a kind of combined color images for generating examined PCB
Method and computer-readable medium.
Background technique
Printed circuit board (Printed Circuit Board, abbreviation PCB) is checked by a checking system, should
System includes a high speed black and white camera to provide the black white image of the PCB.Black and white camera can with a reasonable cost and with
One very high rate obtains image.
It has been found that being difficult to find various defects in the black white image.
A kind of demand is the visibility that increase defect without using slower and expensive color camera, and
And any other relevant financial burden not to transmitting and storing real-time color information.
Summary of the invention
In order to solve problems in the prior art, the present invention provides a kind of combined color images for generating examined PCB
Method and computer-readable medium, the technical solution is as follows:
On the one hand, the present invention provides a kind of sides of at least part of combined color image for generating examined PCB
Method, this method may include: the one or more area-of-interests for selecting one or more PCB；
Obtain one or more color images of one or more area-of-interests of one or more of PCB；Wherein
The color image for obtaining the area-of-interest of a PCB interested includes: to illuminate the area-of-interest with radiation；
Based on one or more of color images, determine that one is colored to monochromatic mapping, by least one cromogram
As the value of pixel is mapped to the value of at least one monochrome image pixel；
Based on the colored mapping to monochrome, a monochrome is calculated to colored mapping, at least one monochrome image
The value of pixel is mapped to the value of at least one composograph pixel；
An at least part of monochrome image of the examined PCB is obtained by an inspection system；And
It is described monochromatic to colored mapping by application, as an image processor by described in the examined PCB extremely
The least a portion of monochrome image is converted into an at least part of combined color image of examined PCB.
On the other hand, it the present invention provides a kind of non-transient computer-readable medium, is stored with for following purpose
Instruction:
Select one or more area-of-interests of one or more PCB；
Obtain one or more color images of one or more area-of-interests of one or more of PCB；Wherein
The color image for obtaining the area-of-interest of a PCB interested includes: to illuminate the area-of-interest with radiation；
Based on one or more of color images, determine that one is colored to monochromatic mapping, by least one cromogram
As the value of pixel is mapped to the value of at least one monochrome image pixel；
Based on the colored mapping to monochrome, a monochrome is calculated to colored mapping, at least one monochrome image
The value of pixel is mapped to the value of at least one composograph pixel；
Obtain an at least part of monochrome image of the examined PCB；And
It is described monochromatic to colored mapping by application, as an image processor by described in the examined PCB extremely
The least a portion of monochrome image is converted into an at least part of combined color image of examined PCB.
Based on above two aspect, further comprise:
The monochrome image can be a gray scale image.
Monochromatic at least partly invert to colored mapping applies the colour in color image to monochromatic mapping
On operation.It wherein " at least partly " indicates in order to apply colour on color image to provide in one to monochromatic mapping
Between image, then will provide a combined color image using the monochromatic mapping to colour on the intermediate image, can
At least partly similar (or at least partly equal) Yu Suoshu color image.
The method can also include: reception or the position distribution for calculating PCB defect, and based on described in PCB defect
Position distribution selects one or more of area-of-interests in one or more PCB.The position distribution of PCB defect can base
The instruction of reality in the inspection to various PCB, or from the position that can provide PCB defect or expected distribution any other
Source.
The method can also include: reception or the position distribution for calculating PCB defect, and be based on CAD
Information selects one or more of area-of-interests in one or more PCB.
The method may include an area-of-interests of selection PCB to include at least two in conductor and insulator.
The method may include an area-of-interests of selection PCB to include the reflecting element of the PCB and non-reflective
Element.
It is executed described in the examined PCB at least in the checking process for being adapted one specific type of defects of detection
The acquisition of the partial monochrome image；And one or more of senses wherein in the selection one or more PCB are emerging
Interesting region is based on the certain types of defect.
The monochromatic value that the value of single monochrome image pixel is mapped to single composograph pixel to colored mapping.
Therefore, the mapping can be considered to be the mapping of a pixel to pixel.
The value of multiple adjacent single monochrome image pixels is mapped to adjacent composograph by the monochromatic mapping to colour
The value of pixel.
The colored determination to monochromatic mapping may include defining a function, and the function is based on one or more
The intensity level of the solid color component of one or more color images of one or more of area-of-interests in a PCB
The value of monochrome image pixel is arranged.For example, it is assumed that the red component of one color image of selection, then the intensity of the red component can
To be the grayscale of the monochrome image.However, for another instance, it is assumed that selected the green component and blue point of a color image
Amount, then the result applied to the red component and the intensity function of the green component can be the grayscale of the monochrome image.
The non-transient computer-readable medium can store the finger of the position distribution for receiving or calculating PCB defect
It enables, and the position distribution based on PCB defect, selects one or more of area-of-interests in one or more PCB.
The non-transient computer-readable medium can store the finger of the position distribution for receiving or calculating PCB defect
It enables, and based on one or more of area-of-interests in CAD information selection one or more PCB.
The non-transient computer-readable medium can store for selecting an area-of-interest of PCB to include conductor
With at least two instruction in insulator.
The non-transient computer-readable medium can store for selecting an area-of-interest of PCB to include described
The instruction of the reflecting element of PCB and non-reflective element.
The present invention first receives the position distribution of PCB defect, and is based on CAD information, selects the area-of-interest of PCB, benefit
The color image for obtaining the region is irradiated with radiation；Pass through the colored mapping calculation monochrome to monochrome to colored mapping afterwards；Again
The monochrome image of PCB is converted into combined color image to colored mapping by monochromatic, generation PCB combined color image
Method has the following beneficial effects:
A. the monochrome image of PCB is synthesized into color image, increases the visibility of PCB defect；
B. by image pixel mapping relations combined color image, without configuring expensive color camera device.
Detailed description of the invention
It is considered as subject of the present invention to be highlighted in the conclusion part of specification and be distinctly claimed right.So
And when in conjunction with the accompanying refering to when, tissue of the invention, operation side can be best understood by reference to described in detail below
Method and theme, feature and advantage, in which:
Fig. 1 is an example of first method provided in an embodiment of the present invention；
Fig. 2 is an example of second method provided in an embodiment of the present invention；
Fig. 3 is a PCB image provided in an embodiment of the present invention, the image in the region of the PCB, various colour elements and each
One example of kind mapping；
Fig. 4 be an image of a PCB provided in an embodiment of the present invention, various monochrome pixels, a combined color image one
Example；And
Fig. 5 is inspection system provided in an embodiment of the present invention and a colored to acquisite approachs.
Wherein, appended drawing reference includes:
11,12,13... conductor
21,22,23,24... image
31...CtBW
32...BWtC
110...PCB
120...GL image
200,300... method
210-240,310-340... step
500... system is checked
510... support and transmission unit
520... black and white camera
530,630... frame grabber
540... memory
550... image processor
620... color camera.
Specific embodiment
In the following detailed description, numerous specific details are set forth in order to provide thorough understanding of the present invention.However, this
Field the skilled person will understand that, the present invention can be practiced without these specific details.In other cases, do not have
Well-known method, process and component is described in detail, in order to avoid the fuzzy present invention.
It is considered as subject of the present invention to be highlighted in the conclusion part of specification and be distinctly claimed right.So
And when in conjunction with the accompanying refering to when, tissue of the invention, operation side can be best understood by reference to described in detail below
Method and theme, feature and advantage.
It should be appreciated that in order to illustrate it is simple and clear, element shown in figure is not drawn necessarily to scale.For example, being
For the sake of clear, the size of some elements may be amplified relative to other elements.In addition, in the case where being deemed appropriate, it can
With repeat reference numerals in the accompanying drawings to indicate corresponding or similar element.
Since electronics member well known to those skilled in the art largely can be used in illustrative embodiments of the invention
Part and circuit are implemented, and as described above, are thinking except necessary range, will not make bigger explanation, to details to manage
It solves and knows from experience basic conception of the invention, in order to avoid obscure or disperse the teachings of the present invention.
The reference of any pair of system all should be mutatis mutandis in the reference to method and to non-transient computer program product
Reference, vice versa.
A kind of combined color image that a black white image of a PCB can be converted to the PCB is provided herein
System, method and non-transient computer program product and method.The PCB is only the example of object.This object can be crystalline substance
Piece or other objects different from PCB.To simplify the explanation, it is assumed that the object is exactly a PCB.Therefore, the system, method,
Non-transient computer program product can be applied on other objects after being subject to necessary modification.
To simplify the explanation, following context and relevant drawings are related to a PCB, although following context and attached drawing are suitable for PCB
Any part (or multiple portions).
To simplify the explanation, following context and relevant drawings are related to the one of a RGB (red, green and blue) color image
Color image -- although text below and relevant drawings are suitable for any color image format.
To simplify the explanation, text below and relevant drawings are related to a black white image of a grayscale (GL) black white image --
Although text below and relevant drawings are suitable for any monochrome image format.
Fig. 1 illustrates methods 100 comprising a series of step 210,220 and 240.
Step 210 may include one or more color images in one or more regions of PCB based on one or more, produce
The colored mapping for arriving grayscale of raw or reception one.
One or more of regions (or can not have by least one of position, size, shape and actual content
Have) and it is different from each other.
One or more of regions can be selected in any manner.
One or more of regions can represent the PCB.For example, they may include conductor, insulator, the PCB
Reflecting element, the non-reflective element of the PCB, the partially transparent part of the PCB and/or the opaque section of the PCB, etc..
The selection can be based on CAD (CAD) information relevant to PCB etc..
The colored calculating to grayscale mapping may include using one or more functions (such as-it is average, be weighted and averaged
The quantity of the color component of each pixel { weighted sum of each pixel color component divided by }, or act on one or more PCB
One or more regions one or more color images colour element any other statistics or non-statistical function.
Value of color (such as rgb value) can be mapped to black and white value (such as grayscale value) by the mapping.The mapping
The value of color of single pixel can be mapped to the grayscale of single pixel, although other pixels (such as phase can be considered in the mapping
Adjacent pixel) colour element.
Step 220 may include being reflected based on the colored mapping to grayscale to calculate one grayscale of color image to colored
It penetrates.
The grayscale can invert (or at least partly inverting) described colored mapping for arriving grayscale to colored mapping.
The colored mapping to grayscale can be color by the one or more in one or more regions of one or more PCB
The color pallet of chromatic graph picture is transferred to black and white pallet.
The black and white pallet of the black white image of PCB can be transferred to the conjunction of PCB to colored mapping by the grayscale
At the color pallet of color image.
Step 240 includes one or more parts by the way that grayscale to be applied to one or more PCB to colored mapping
One or more gray scale images on it is colored to generate one or more synthesis of one or more parts of one or more PCB
Image.
It should be noted that can based on specific PCB calculate grayscale to colour mapping, and can may with it is specific
Step 240 is calculated on other PCB different PCB, can be ideally identical as the specific PCB, it may belong to the PCB identical
Batch, or another crowd of PCB may be belonged to.
Fig. 2 shows methods 300 comprising a series of step 312,314,316,320,330 and 340.
Step 312 may include the one or more area-of-interests for selecting one or more PCB.
One or more of area-of-interests may be by least one in position, size, shape and actual content
A (or not having) and it is different from each other.
One or more of area-of-interests can be selected in any way.
One or more of area-of-interests can represent the PCB.Such as-they may include conductor, insulator, should
The reflecting element of PCB, the non-reflective element of the PCB, the partially transparent part of the PCB and/or the opaque section of the PCB, etc.
Deng.
The selection can be based on CAD (CAD) information relevant to PCB etc..
The step 314 may include one or more of one or more area-of-interests for obtaining one or more PCB
A color image.
It is acquired with reference to the image 21,22 and 23 of one or more area-of-interests of Fig. 3-PCB10.Each is interested
Region is illustrated as including conductor (11,12 and 13) and its surrounding.It should be noted that can choose one, two or more than four
Area-of-interest, and their image can be acquired.
Image 21 includes J × K pixel 21 (1,1) -21 (J, K).The RGB component of these pixels be represented as [21 (1,1,
R),21(1,1,G),21(1,1,B)]-[21(J,K,R),21(J,K,G),21(J,K,B)]。
Image 22 includes J × K pixel 22 (1,1) -21 (J, K).The RGB component of these pixels be represented as [22 (1,1,
R),22(1,1,G),22(1,1,B)]-[22(J,K,R),22(J,K,G),22(J,K,B)]。
Image 23 includes J × K pixel 23 (1,1) -23 (J, K).The RGB component of these pixels be represented as [23 (1,1,
R),23(1,1,G),23(1,1,B)]-[23(J,K,R),23(J,K,G),23(J,K,B)]。
Step 316 may include one or more of cromograms in one or more regions of PCB based on one or more
As calculating the colored mapping (CtBW) for arriving black and white.
The calculating of the colored mapping (CtBW) to black and white may include one or more applied in one or more PCB
One or more functions (such as-average, weighted average on the color image of one or more color images in a region
The quantity of the color component of each pixel { weighted sum of each pixel color component divided by }) or any other statistical function
Or non-statistical function.
The colored mapping to black and white can be mapped as value of color (such as rgb value) black and white values (such as black and white values).
The colour can be mapped as the value of color of single pixel the black and white values of single pixel to the mapping of black and white, although the mapping
It is considered that the colour element of other pixels (such as adjacent pixel).
With reference to Fig. 3-CtBW31 by colour element [21 (1,1, R), 21 (1,1, G), 21 (1,1, B)]-[21 (J, K, R), 21
(J,K,G),21(J,K,B)]、[22(1,1,R),22(1,1,G),22(1,1,B)]-[22(J,K,R),22(J,K,G),22(J,
K, B)] and [23 (1,1, R), 23 (1,1, G), 23 (1,1, B)]-[23 (J, K, R), 23 (J, K, G), 23 (J, K, B)] mapping
To a monochrome pixels 24 (1,1) -24 (J, K) comprising (for example) grayscale (GL) value 21 (1,1, GL) -24 (J, K, GL).
Step 320 may include calculating a black and white to colour to the mapping (CtBW) of black and white grayscale based on the colour
It maps (BWtC).
The black and white can invert (or at least partly inverting) described colored mapping for arriving black and white to colored mapping.
The colored mapping to black and white can be by the one or more of one or more regions of one or more PCB
The color pallet of a color image is converted to a black and white pallet.
The black and white pallet of the black white image of one PCB can be converted to the conjunction of the PCB to colored mapping by the black and white
At the color pallet of color image.
With reference to Fig. 3, BWtC32 is based on CtBW31 and is calculated.
Step 330 may include at least part of black white image (Ibw) for obtaining a PCB.
It is acquired with reference to a gray scale image (GL image) 120 of Fig. 4-PCB110.
GL image includes M × N number of pixel 120 (1,1) -120 (M, N).
Step 340 may include by applying black and white to colored to reflect on at least part of black white image (Ibw) of PCB
(BWtC) is penetrated to calculate at least part of color composite image (Ics) of the PCB.
The Ics can show by storage, transmission, to user, be provided to Verification System, etc..
Being used on pixel 120 (1,1)-120 (M, N) with reference to Fig. 4-BWtC31 to provide includes N × M colour element
[120 (1,1, R), 120 (1,1, G), 120 (1,1, B)]-[120 (M, N, R's), 120 (M, N, G), 120 (M, N, B)] is described
The combined color image of PCB.
Fig. 5 shows a kind of system for being able to carry out the above method.It should be noted that colored to acquisite approachs (the colored phase
Machine 620, frame grabber 630) the inspection system can be belonged to or belong to another system.It should be noted that step 210,220,
240, at least one of 312,316,320 and 340 can by inspection system and/or positioned at it is described check one of exterior or
Multiple computers execute.
Fig. 5 shows a black and white to acquisite approachs comprising black and white camera (B&W video camera) 520 and frame grabber 530.
The inspection system can also include memory 540, image processor 550 and be used to support and the support of mobile PC B110 and
Transmission unit 510.
The invention discloses the method and computer-readable medium of a kind of combined color image for generating examined PCB,
This method comprises: one or more area-of-interests in selection one or more PCB；Area-of-interest is illuminated with radiation to obtain
One or more color images of area-of-interest；Based on color image, determine colored to monochromatic mapping；Based on colour to list
The mapping of color calculates the monochromatic mapping to colour, the value of at least one monochrome image pixel is mapped at least one synthesis
The value of image pixel；Check that system obtains at least part of monochrome image of examined PCB by one；And it is monochromatic by application
To colored mapping, at least part of monochrome image of examined PCB is converted into examined PCB by an image processor
At least part of combined color image.The present invention is monochrome by enameling in color image to monochromatic mapping reversion application
To colored mapping, the combined color image of PCB can be obtained without color camera.
In book is described above, the present invention is described referring to specific embodiments of the present invention.It may be evident can
It, can be to making herein in the case where the of the invention more broad spirit and range that are illustrated in without departing from such as appended claims
Various modifications and modification.
Those skilled in the art will appreciate that the boundary between logical blocks is exemplary only, and alternative embodiment
Combinable logical block or circuit element, or various logic block or circuit element are forced at into the optional decomposition of function.Therefore, it is necessary to
Understand, architecture described herein is only exemplary, in fact, many other system knots for realizing identical function
Structure can be performed.
Realize identical function component any arrangement effectively " associated " so that realizing desired function.Therefore, this
In for realize specific function and combined any two component can be considered as " associated " each other so that realizing desired function
Can, but regardless of framework or intermediate module.Similarly, so associated any two component can also be considered as " can operating each other
Ground connection " or " being operatively coupled " are to realize desired function.
In addition, it will be appreciated by persons skilled in the art that the boundary between aforesaid operations is exemplary only.Multiple operations can
To merge into single operation, single operation can be distributed in operation bidirectional, and can be executed under the least partially overlapped time
Operation.In addition, alternative embodiment may include the multiple of specific operation for example, and operation order can be in various other implementations
Change in example.
In another example in one embodiment, shown example can be used as on single integrated circuit or in same equipment
Circuit and implement.Optionally, example can be used as any amount of individually integrated electricity interconnected amongst one another in an appropriate manner
Road or individual equipment and implement.The integrated circuit can be chip system, general processor, signal processor, FPGA, mind
Through network integrated circuit etc..
However, other modifications, variation and substitution are also possible.Therefore, it should anticipate and not restrictive on illustrative sense
Specification and attached drawing are treated in justice.
In claim statement, any reference symbol being placed between round parentheses is not construed as limitation claims.Word
The presence of other elements or step that those are listed in claim statement is not precluded in language " comprising ".In addition, used herein
Term "a" or "an", be defined as one or more than one.Moreover, in such as claim statement of introduction phrase
The use of "at least one" and " one or more " should not be construed as implying that indefinite article "a" or "an" introduces another
Any specific rights requirement of claim comprising this introducing is limited to only include as one by claim elements
The invention of element, even if same claim includes introduction phrase " one or more " or "at least one" and indefinite article, such as
"one" or "one".Using definite article and so.Unless otherwise stated, the art of such as " first " and " second " etc
Pragmatic is in arbitrarily distinguishing element described in these terms.Therefore, these terms are not necessarily intended to indicate the time of these elements
Or other priority.The only fact that certain measures are described in claim different from each other is not offered as the group of these measures
Conjunction cannot be used.
Although certain features of the invention have been illustrated and described, those of ordinary skill in the art now will
Expect many modifications, replacement, change and equivalent.It should therefore be understood that appended claims be intended to cover fall into it is of the invention
All such modifications and variations in true spirit.
Claims (22)
1. a kind of method for at least part of combined color image for generating examined PCB, which is characterized in that the method
Include:
Select one or more area-of-interests of one or more PCB；
Obtain one or more color images of one or more area-of-interests of one or more of PCB；Wherein obtain
The color image of the area-of-interest of one PCB interested includes: to illuminate the area-of-interest with radiation；
Based on one or more of color images, determine that one is colored to monochromatic mapping, by least one color image picture
The value of element is mapped to the value of at least one monochrome image pixel；
Based on the colored mapping to monochrome, a monochrome is calculated to colored mapping, at least one monochrome image pixel
Value be mapped to the value of at least one composograph pixel；
An at least part of monochrome image of the examined PCB is obtained by an inspection system；And
It is described monochromatic to colored mapping by application, as an image processor by least portion described in the examined PCB
The monochrome image divided is converted into an at least part of combined color image of examined PCB.
2. the method according to claim 1, wherein the monochrome image is gray scale image.
3. the method according to claim 1, wherein the monochromatic mapping to colour is at least partly inverted institute
It states the colored mapping to monochrome and applies the operation on color image.
4. the method according to claim 1, wherein further include:
The position distribution of PCB defect, and the position distribution based on PCB defect are received or calculate, selection is one or more
One or more of area-of-interests in PCB.
5. the method according to claim 1, wherein further include:
The position distribution of PCB defect is received or calculated, and is based on CAD information, selects one or more PCB
In one or more of area-of-interests.
6. the method according to claim 1, wherein including an area-of-interest of selection PCB to include conductor
With at least two in insulator.
7. the method according to claim 1, wherein including an area-of-interest of selection PCB to include described
The reflecting element of PCB and non-reflective element.
8. the method according to claim 1, wherein in the inspection for being adapted one specific type of defects of detection
The acquisition of at least part of monochrome image of the examined PCB is executed in journey.
9. the method according to claim 1, wherein the monochrome arrives colored mapping for single monochrome image picture
The value of element is mapped to the value of single composograph pixel.
10. the method according to claim 1, wherein the monochromatic mapping to colour will be multiple adjacent single
The value of monochrome image pixel is mapped to the value of adjacent composograph pixel.
11. the method according to claim 1, wherein the colored determination to monochromatic mapping includes definition
One function, one or more of the function based on one or more of area-of-interests in one or more of PCB
The intensity level of the solid color component of color image is arranged the value of monochrome image pixel.
12. a kind of non-transient computer-readable medium, which is characterized in that be stored with the instruction for following purpose:
Select one or more area-of-interests of one or more PCB；
Obtain one or more color images of one or more area-of-interests of one or more of PCB；Wherein obtain
The color image of the area-of-interest of one PCB interested includes: to illuminate the area-of-interest with radiation；
Based on one or more of color images, determine that one is colored to monochromatic mapping, by least one color image picture
The value of element is mapped to the value of at least one monochrome image pixel；
Based on the colored mapping to monochrome, a monochrome is calculated to colored mapping, at least one monochrome image pixel
Value be mapped to the value of at least one composograph pixel；
Obtain an at least part of monochrome image of the examined PCB；And
It is described monochromatic to colored mapping by application, as an image processor by least portion described in the examined PCB
The monochrome image divided is converted into an at least part of combined color image of examined PCB.
13. computer-readable medium according to claim 12, which is characterized in that the monochrome image is gray scale image.
14. computer-readable medium according to claim 12, which is characterized in that the monochromatic mapping to colour is at least
The colored mapping to monochrome is applied the operation on color image by partial inversion.
15. computer-readable medium according to claim 12, which is characterized in that be stored with instruction for receiving or calculating
The position distribution of PCB defect, and the position distribution based on PCB defect select one in one or more PCB
Or multiple semi-cylindrical hills.
16. computer-readable medium according to claim 12, which is characterized in that be stored with instruction for receiving or calculating
The position distribution of PCB defect, and be based on CAD information, select one or more PCB in it is one or
Multiple semi-cylindrical hills.
17. computer-readable medium according to claim 12, which is characterized in that be stored with instruction for selecting PCB's
One area-of-interest is to include at least two in conductor and insulator.
18. computer-readable medium according to claim 12, which is characterized in that be stored with instruction for selecting PCB's
One area-of-interest with include the PCB reflecting element and non-reflective element.
19. computer-readable medium according to claim 12, which is characterized in that be adapted one specific type of detection
The acquisition of at least part of monochrome image of the examined PCB is executed in the checking process of defect；And its
Described in select one or more of area-of-interests in one or more PCB for based on the certain types of defect.
20. computer-readable medium according to claim 12, which is characterized in that the monochromatic mapping to colour will be single
The value of one monochrome image pixel is mapped to the value of single composograph pixel.
21. computer-readable medium according to claim 12, which is characterized in that the monochromatic mapping to colour will be more
The value of a adjacent single monochrome image pixel is mapped to the value of adjacent composograph pixel.
22. computer-readable medium according to claim 12, which is characterized in that the colored mapping to monochrome is really
Fixed includes defining a function, and the function is based on one or more of area-of-interests in one or more of PCB
The intensity level of the solid color component of one or more color images is arranged the value of monochrome image pixel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201862695045P | 2018-07-08 | 2018-07-08 | |
| US62/695,045 | 2018-07-08 |
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| CN201910598410.3A Active CN110349235B (en) | 2018-07-08 | 2019-07-04 | Method for generating composite color image of inspected PCB and computer readable medium |
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| TW (1) | TWI721385B (en) |
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Also Published As
| Publication number | Publication date |
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| TWI721385B (en) | 2021-03-11 |
| TW202007247A (en) | 2020-02-01 |
| CN110349235B (en) | 2024-05-14 |
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